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tdma - cdma
(1643 results)-
White Papers
The IT Manager's Guide to Selecting the Best Managed Services Vendor for Telecom Expense and Mobility Management
Jun 2011
Evaluating managed services providers is not a simple process. Analysts and past users agree that large variances in service offerings and differing pricing models have resulted in delayed...
Provided by ProfitLine
-
Whitepapers
NetApp: Building Next Generation Agile Storage
Sep 2012
"Next generation storage" used to refer to scale-out storage systems. Now that we're seeing a broad transition to such systems, it begs the question: what's the next, next generation storage...
Provided by NetApp
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White Papers
EDGE- Introduction of High Speed Data in GSM/GPRS Networks
Mar 2003
This white paper is intended for global system for mobile communications (GSM) operators interested in understanding Ericsson's view on how enhanced data for global evolution (EDGE) can play an...
Provided by Ericsson
-
Whitepapers
IDC Analyst Paper - Expert Integrated Systems: A Next Generation Computing Platform
Mar 2013
Expert integrated systems: A next-generation computing platform From standalone systems to virtualization, computing has come a long way. Now, with advances in converged systems and integrated...
Provided by IBM
-
Whitepapers
IT Roles Facing Extinction
Jul 2012
Today, there's a huge amount of focus on getting more efficiency using virtualization, the cloud, Web 2.0, networking, and mobility. Better efficiency and innovation will reduce the number of...
Provided by Global Knowledge
-
White Papers
TDMA Technology: Bringing Increased Capacity and Functionality to Professional Digital Two-Way Radio
Jan 2009
Licensed, professional two-way radio is on the verge of making the biggest leap forward since the invention of the transistor - the move from analog to digital. Digital radio offers many...
Provided by Motorola
-
Whitepapers
Energy Efficient Scheduling in Cross Layer Optimized Clustered Wireless Sensor Networks
Jun 2012
In this paper, the authors present an energy efficient scheduling algorithm for clustered wireless sensor networks. The main objective is to provide optimized Time Division Multiple Access (TDMA)...
Provided by Kurukshetra University
-
Whitepapers
Mitigation of Non- Linear Impairments of W-CDMA Power Amplifier
Dec 2010
In this paper a non-linear Power Amplifier (PA) with memory effects is modeled and a Digital pre-distortion algorithm is presented to mitigate non-linearity effects of a power amplifier. Look-Up...
Provided by Kurukshetra University
-
White Papers
3G Networks Will Evolve, But Will They Cope?
Sep 2009
3G traffic volumes have increased substantially since 2007, and this trend is set to continue with many drivers for further growth. As 3G traffic volumes increase, 3G operators potentially face...
Provided by Unwired Insight
-
White Papers
Scalable Feedback Suppression Mechanism for Multicast Service in Wireless TDMA Network
May 2009
Hybrid ARQ is deployed in error prone wireless network to provide reliable unicast transmission with the positive or negative acknowledgement report. However, the feedback implosion is a...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Scalable Feedback Suppression Mechanism for Multicast Service in Wireless TDMA Network
May 2009
Hybrid ARQ is deployed in error prone wireless network to provide reliable unicast transmission with the positive or negative acknowledgement report. However, the feedback implosion is a...
Provided by Institute of Electrical and Electronics Engineers
-
Case Studies
Nortel Networks Case Study: Open Mobile
Jan 2009
Open Mobile is an operator that serves the Puerto Rico wireless market and launched in June of 2007. Open Mobile is characterized by its innovative products and solutions portfolio that it...
Provided by Nortel Networks
-
White Papers
White Paper - WiTDM Vs. 802.11
Apr 2009
WiTDM is one kind of TDMA technology, and a transmission protocol suitable for outdoor equipments with Point to Point and Point to Multi-Point transmission in long distance. Being different from...
Provided by Formosa Wireless Systems
-
White Papers
Long Distance Bridge Solution
Apr 2009
It developed TDMA technology to be first releasing in the world. With the features of high throughput and long distance over 50Km transmission, KW8000 Series provide a robust wireless backhaul...
Provided by Formosa Wireless Systems
-
White Papers
CDMA and LTE: Making the Most of Wireless Broadband - An Overview of Strategies, Issues and Opportunities
Mar 2009
Faced with increased demand for bandwidth-intensive services and rapidly changing subscriber usage patterns, wireless operators need an effective strategy for evolving to LTE networks. CDMA...
Provided by Alcatel-Lucent
-
Whitepapers
Evaluation of the Interference and Noise Suppression Capability of Uniform Linear Array Adaptive Beamforming Antenna
Dec 2011
This paper evaluates the interference and noise suppression capability of uniform linear array adaptive beamforming antenna, at base stations of WCDMA mobile communication system. The...
Provided by International Journal of Computer Theory and Engineering (IJCTE)
-
Whitepapers
Spatial Analysis of Signal Strength in a Wireless Communication Medium for Indoor Geolocation System
Aug 2011
This paper tends to address the problem of having to track devices within an indoor location, Spatial analysis of signal with respect to particular location was carried out, it deploys the use of...
Provided by International Journal of Computer Theory and Engineering (IJCTE)
-
White Papers
The OMH Initiative: Enhancing CDMA Device Availability
Sep 2009
In a very short period of time, mobile technology has managed to move from a luxurious convenience to an indispensable tool. Despite saturation in mature markets, increasingly sophisticated...
Provided by IDG (International Data Group)
-
White Papers
A 2-Slot TDMA Solution for Project 25 Phase 2
Mar 2008
The Project 25 standards development process comprised of the partnership of Project 25, the Telecommunications Industry Association (TIA), and the APCO Project 25 Interface Committee (APIC) has...
Provided by EADS Secure Networks North America
-
White Papers
Frame and Burst Acquisition in TDMA Satellite Communication Networks With Transponder Hopping
Jul 2009
The paper presents frame and burst acquisition in a satellite communication network based on Time Division Multiple Access (TDMA) in which the transmissions may be carried on different...
Provided by University of Nairobi
-
White Papers
Implementation and Evaluation of a TDMA MAC for WiFi-Based Rural Mesh Networks
Oct 2009
WiFi mesh networks with outdoor links have become an attractive option to provide cost-effective broadband connectivity to rural areas, especially in developing regions. It is well understood that...
Provided by Association for Computing Machinery
-
White Papers
Energy Efficient TDMA Sleep Scheduling in Wireless Sensor Networks
Jan 2009
Sleep scheduling is a widely used mechanism in Wireless Sensor Networks (WSNs) to reduce the energy consumption since it can save the energy wastage caused by the idle listening state. In a...
Provided by Illinois Institute of Technology
-
White Papers
eL-MAC: An Enhanced Energy Efficient TDMA-Based MAC Protocol for Wireless Sensor Network
Nov 2008
Wireless sensor network is becoming an attractive field in wireless network research community. The ability of network structure to maximize network lifetime is among the hot topic due to...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Development of Energy Aware TDMA-Based MAC Protocol for Wireless Sensor Network System
May 2009
The development of Wireless Sensor Networks (WSN) can be motivated by several types of applications such as habitat monitoring, smart healthcare system, building automation, and etc. These...
Provided by EuroJournals
-
White Papers
Towards Optimised Retransmission Reservation in Real-Time Wireless TDMA
Jun 2009
Providing real-time guarantees in wireless networks requires the reservation of transmission time not only for transmissions but also for retransmissions. Retransmissions are required to ensure...
Provided by Trinity College Dublin
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White Papers
An Efficient Algorithm to Find Broadcast Schedule in Ad Hoc TDMA Networks
Dec 2008
The broadcast scheduling is of fundamental importance and practical concern for ad hoc network performance measures such as the communication delay and the throughput. The scheduling problem on...
Provided by Kuwait University
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White Papers
TreeMAC: Localized TDMA MAC Protocol for Real-Time High-Data-Rate Sensor Networks
Jan 2009
Earlier sensor network MAC protocols focus on energy conservation in low-duty cycle applications, while some recent applications involve real-time high-data-rate signals. This motivates one to...
Provided by Washington State University
-
White Papers
Infuse: A TDMA Based Data Dissemination Protocol for Sensor Networks
Jan 2009
Reliable dissemination of bulk data is one of the important problems in sensor networks. For example, programming or upgrading the software in sensors at run-time requires reliable dissemination...
Provided by Michigan State University
-
White Papers
TDMA for Long Distance Wireless Networks
Sep 2009
Off late the UC Berkeley TIER Project studied the need to deploy network infrastructure to emerging regions. Their goal was to "Address the challenges in bringing the Information Technology...
Provided by University of Cambridge
-
White Papers
A Real-Time Traffic Packet Scheduler for a Novel TDMA MAC Protocol
Jun 2008
Wireless mesh networks are being rapidly deployed in both urban and rural areas impacting a large fraction of the world's population. As the profile of the average user changes so does the...
Provided by University of California
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White Papers
FAMA/TDMA Hybrid MAC for Wireless Sensor Networks
Nov 2008
Wireless sensor networks are an emerging area of interest among embedded and wireless research groups around the globe. It is envisioned that these low power computers will become the enabling...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Development of an H-TDMA for Long-Term Unattended Measurement of the Hygroscopic Properties of Atmospheric Aerosol Particles
Jun 2009
A new hygroscopic tandem differential mobility analyzer (H-TDMA) has been constructed at Lund University within the frameworks of the EU FP6 Infrastructure Project EUSAAR (www.eusaar.org). The aim...
Provided by European Geosciences Union
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White Papers
Performance Analysis of Transmit Antenna Selection in Broadcast MISO Channels
Apr 2009
Time-Division Multiple Access (TDMA) with Transmit Antenna Selection (TAS) is a simple and feasible transmission scheme for broadcast multiple-input single-output (BC-MISO) channels. Compared to...
Provided by Universidad de Cantabria
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White Papers
Soft-TDMAC: A Software TDMA-Based MAC Over Commodity 802.11 Hardware
Jan 2009
This paper designs and implements Soft-TDMAC, a software Time Division Multiple Access (TDMA) based MAC protocol, running over commodity 802.11 hardware. Soft-TDMAC has a synchronization...
Provided by University of California
-
White Papers
A Runtime Stability Analysis of Clock Synchronization Precision on a Time-Triggered Bus Prototype
Mar 2009
This paper provides a runtime stability analysis of the Daisy-Chain clock synchronization algorithm running over CASCA - a time-triggered extension of CAN bus. Themain objective is to show with...
Provided by Universidade Federal do Rio Grande do Sul
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White Papers
Power-Efficient Resource Allocation and Quantization for TDMA Using Adaptive Transmission and Limited-Rate Feedback
Sep 2008
Power-efficient scheduling and resource allocation are critical tasks for wireless sensor networks as well as commercial and tactical radios relying on IEEE access standards for power-limited...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
An Efficient TDMA Scheduling Scheme for Wireless Sensor and Actor Networks
Jun 2008
This paper presents an efficient time slot assignment algorithm for a Wireless Sensor and Actor Network (WSAN), which consists of stationary sensors for detecting events and mobile actors for...
Provided by Institute of Electronics, Information and Communication Engineers
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White Papers
Topology-Transparent Distributed Scheduling in Multi-Hop Wireless Networks
May 2009
Transmission scheduling is a key design problem in wireless multi-hop networks and many scheduling algorithms have been proposed to maximize the spatial reuse and minimize the Time-Division...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Joint Power Control and Link Scheduling in Wireless Networks for Throughput Optimization
Aug 2009
This paper concerns the problem of finding the minimum-length TDMA frame of a power-controlled wireless network subject to traffic demands and SINR (signal-to-interference-plus-noise ratio)...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Distributed Call Admission Protocol for Multi-Channel Multi-Radio Wireless Networks
Dec 2007
This paper proposes a Distributed Call Admission Control protocol (DCAC) to provide bandwidth and delay guaranteed Quality of Service (QoS) in multihop wireless mesh networks, by exploiting the...
Provided by Institute of Electrical and Electronics Engineers
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Whitepapers
An Improved Method for Secondary Code Synchronization in WCDMA
Jun 2012
The initial search procedure in WCDMA is used to identify the scrambling code used by the base station that has the lowest path loss coefficient of the received signal among all the other base...
Provided by International Journal of Scientific Research Engineering &Technology (IJSRET)
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Whitepapers
Differential Coding for MAC Based Two-User MIMO Communication Systems
Feb 2012
In this paper, the authors explain how to implement differential modulation in Multiple Access Channel (MAC) based uplink two-user Multiple-Input Multiple-Output (MIMO) communication system. It is...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
An Efficient MAC Protocol for Supporting QoS in Wireless Sensor Networks
Nov 2012
Wireless sensor network can be employed in wide range of application areas, such as target detection and tracking, military, and environmental monitoring. Media access control protocol is one of...
Provided by JATIT
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Whitepapers
A CDMA Cellular Network Base Station Distributed Closed-Loop Power Control Algorithm Based on Sixteen-Iterations
Jul 2012
All users transmit on the same frequency and time and utilize the entire bandwidth in CDMA compared to TDMA or FDMA. Even though CDMA provides more capacity and better QoS, the capacity is...
Provided by International forum of researchers Students and Academician
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Whitepapers
On the Diversity Reception With Correlated Rayleigh-Fading Signals
Aug 2012
New techniques are required to improve spectrum utilization to satisfy the increasing demand for many radio services without increasing the used radio frequency spectrum. One of these techniques...
Provided by JATIT
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Whitepapers
Enhancing Cellular Infrastructures: A Reflective Approach
Dec 2011
In this paper, the authors make a case of a reflective architecture for cellular systems as means to support flexibility and evolvability of the existing cellular network infrastructure to deal...
Provided by Association for Computing Machinery
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Whitepapers
Communication and Self Location of Wireless Sensor Network or Nodes Using Wireless System: A Survey
Apr 2013
A wireless ad-hoc network is a decentralized type of wireless network. A WSN is dynamically self-organized and self-configured, with the nodes in the network automatically Wireless sensor nodes...
Provided by International Journal of Application or Innovation in Engineering & Management (IJAIEM)
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Whitepapers
Performance of MIMO Multi-Carrier CDMA With QPSK Modulation in Rayleigh Channel
Apr 2013
MC-CDMA (Multi Carrier Code Division Multiple Access) plays an important role in modern wireless communications. Modern communication requires an efficient spectrum usage and capacity and...
Provided by International Journal of Application or Innovation in Engineering & Management (IJAIEM)
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Whitepapers
Optical Interleave Division Multiple Access (OIDMA) System-A Review
Mar 2013
In Interleave Division Multiple Access (IDMA), users are assigned with specific inter-leavers instead of PN-sequences as in case of Code Division Multiple Access (CDMA) systems to differentiate...
Provided by International Journal of Application or Innovation in Engineering & Management (IJAIEM)
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Whitepapers
Performance Analysis of Multi User Detectors for Synchronous Ds-Cdma Systems
Sep 2012
A Direct Sequence Code Division Multiple Access (DS-CDMA) is a popular wireless technology. This system suffers from Multiple Access Interference (MAI) caused by Direct Sequence users and near -...
Provided by International Journal of Soft Computing and Engineering (IJSCE)
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Whitepapers
Call Admission Control, Packet Level QOS in 4G Broad Band Wireless Access System With CDMA
Jul 2012
Consider the problem of scheduling data in the down link of a cellular network over parallel time-varying channels, while providing Quality of Service (QoS) guarantees to multiple users in the...
Provided by IJCER
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Whitepapers
Performance Analysis and Simulation Result of MC-CDMA for AWGN Channel and Raleigh Based on SNR/BER
Sep 2011
For any electronic communication system bandwidth utilization and BER performance under different channel conditions are major aspect of consideration, to cope up with these conditions different...
Provided by ACCENTS
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Whitepapers
Optimized Rapid Data Collection in Tree Based WSN
Apr 2013
Fast and energy efficient data collection in an energy constraint ad-hoc sensor network is always a challenging issue. The network topology and interferences causes significant effects on data...
Provided by Creative Commons
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Whitepapers
BEP and Throughput Analysis of Incremental Selective Relaying in DS-CDMA Systems
Dec 2012
In this paper, the authors derive exact form expressions for the Bit Error Probability (BEP) and throughput of cooperative Direct Sequence-Code Division Multiple Access (DS-CDMA) systems using...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
New Multichannel MAC Protocol for Ad Hoc Networks
Mar 2008
Since, wireless ad hoc networks require a distributed multiple access protocol, the Medium Access Control (MAC) layer can be seen as the bottleneck for the throughput in wireless 802.11-based ad...
Provided by Universit� du Qu�bec
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Whitepapers
Optimal Joint Power Allocation and Phase Control for DS-CDMA Cognitive Radio Networks
Jan 2012
Efficient and fair resource allocation in Cognitive Radio (CR) networks under strict constraints imposed by the primary network is a challenging problem for underlay Dynamic Spectrum Access (DSA)...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Joint Channel/Network Coding for Star Networks
Apr 2013
Channel coding alone is not sufficient to reliably transmit a message of finite length from a source to one or more destinations as in, e.g., file transfer. To ensure that no data is lost, it must...
Provided by University of Northern Iowa
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Whitepapers
Joint Design of Channel and Network Coding for Star Networks
Dec 2012
Channel coding alone is not sufficient to reliably transmit a message of finite length K from a source to one or more destinations as in, e.g., file transfer. To ensure that no data is lost, it...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Non-Gaussian Noisy Channel Effect on Multi-User IDMA-UWB Communication System
Apr 2013
In this paper, multi-user communication scenario for Ultra Wide Band (UWB) system has been considered. For effective use of spectrum in multi-user communication, a new variant of CDMA scheme known...
Provided by International Journal of Computer Networks and Wireless Communications (IJCNWC)
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Whitepapers
Multi-Class Traffic Management in 4G Network
Sep 2012
The 4G network is a heterogeneous network, supports wireless access (WiFi, WiMAX, Bluetooth), cellular networks (GSM, CDMA, GPRS, UMTS), WSN, MANET and other earlier generation networks (PSTN,...
Provided by International Journal of Advances in Engineering & Technology (IJAET)
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Whitepapers
Permutation Spreading for Asynchronous MIMOCDMA Systems Using Hadamard Codes and Gold Scrambling Sequences
Feb 2009
Permutation spreading has been proposed as alternative techniques for assigning spreading codes to the different transmit antennas of a user in a Multiple-Input Multiple-Output Code Division...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
Optimal Rate and Power Allocation in Uplink Packet CDMA Transmission
Feb 2009
In this paper, the authors revisit an optimal rate and power allocation problem to maximize throughput in uplink CDMA single-cell packet data communications. First, they show that the...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
Energy Efficient Conflict Free Query Scheduling for Wireless Sensor Networks
Jun 2012
There is an increase in demand of high performance query services, with the emergence of high data rate applications. To meet this challenge the authors propose Dynamic Conflict-free Query...
Provided by International Journal of Engineering and Advanced Technology (IJEAT)
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Whitepapers
Energy Efficiency in TDMA-Based Next-Generation Passive Optical Access Networks
Apr 2013
Next-generation Passive Optical Network (PON) has been considered in the past few years as a cost-effective broadband access technology. With the ever-increasing power saving concern, energy...
Provided by Stanford Technology Ventures Program
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Whitepapers
Multi-Rate Communications Using Layered Interleave-Division Multiple Access with Power Allocation
Feb 2009
Interleave-Division Multiple-Access (IDMA) has recently been proposed as a multiuser scheme where users are separated by unique interleaver sequences. When used with low-complexity iterative...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
On the Effect of Combined Equalization for MC-CDMA Systems in Correlated Fading Channels
Feb 2009
Equalization techniques are considered in Multi Carrier-Code Division Multiple Access (MC-CDMA) systems to efficiently combine subcarriers contribution and improve the performance. In this paper,...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
Joint Timing and Channel Estimation for Bandlimited Long-Code-Based MC-DS-CDMA: A Low-Complexity Near-Optimal Algorithm and the CRLB
Feb 2013
Joint Timing and Channel Estimation (JTCE) for bandlimited long-code-aided Multi-Carrier Direct-Sequence Code Division Multiple Access (MC-DS-CDMA) systems is investigated. The authors establish...
Provided by Institute of Electrical & Electronic Engineers
-
Whitepapers
Improving the Channel Utilization of IEEE 802.11p/1609 Networks
Feb 2009
The IEEE 802.11p/1609 standards specify a suite of communication protocols for vehicular communication networks. A new operational mode, called the WAVE (Wireless Access in Vehicular Environments)...
Provided by Institute of Electrical and Electronics Engineers
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Whitepapers
An Optimal Admission Control Policy for CDMA Multiple Antenna Systems with QoS Constraints
Mar 2008
An optimal Admission Control (AC) policy is proposed for a CDMA multiple antenna system, which can maximize the system throughput while simultaneously guaranteeing all Quality-of-Service (QoS)...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
Joint Impact of Quantization and Clipping on Single- and Multi-carrier Block Transmission Systems
Mar 2008
In this paper, the authors investigate the joint impact of quantization and clipping, caused by Analog-to-Digital Converters (ADCs) with low bit resolutions, on single- and multi-carrier block...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
Two-layer CI Phase Coding Interference Cancellation and Detection of Uplink Broadband Wireless Access System
Mar 2008
Multi-carrier OFDM-CDMA has a range of advantages that make ideal for high data rate wireless access system. A two-layer Carrier Interferometry (CI) phase coding approach is proposed for enhancing...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
A Suboptimal LQ Power Control Algorithm for a CDMA Wireless System
Mar 2008
In today's wireless systems, power control is an important problem which is related to the Quality-of-Service (QoS) and battery utilization at the mobile units. This problem is studied in this...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
The Effect of Mobility on the User-Level Fairness of a 3G Wireless Technology (EV-DO)
Mar 2008
In this paper, the behavior of a 3G wireless technology is evaluated. The analysis is done using a simulation tool, based on the Tangram-II platform, which incorporates a detailed propagation...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
Throughput Analysis of TDMA System Forward Link with Superposition Coding for Location-Based Sets of Users
Mar 2008
Superposition coding can be used to improve capacity of communications in a variety of scenarios. In this paper, the authors propose a novel location-based data transmission strategy using...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
Link-Level Analysis of Downlink Handover Regions in UMTS
Apr 2008
This paper investigates the downlink handover (soft/softer/hard) performance of Wideband Code Division Multiple Access (WCDMA) based 3rd generation Universal Mobile Telecommunication System...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
A Joint Power Control and Interference Avoidance Code Assignment Strategy for Downlink MC-DS-CDMA with 2D Spreading
Apr 2008
Maintaining the Quality-of-Service (QoS) requirement while eliminating interference is an important but difficult task in the downlink MC-DS-CDMA with Two-Dimensional (2D) spreading. To achieve...
Provided by National Cheng Kung University
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Whitepapers
MBMS Performance with Single Frequency Network Operation on WCDMA Network
Apr 2008
The aim of this paper is to evaluate the system level performance of Point-to-Multipoint (p-t-m) Multimedia Broadcast Multicast Service (MBMS) using Single Frequency Network (SFN) operation on...
Provided by Institute of Electrical and Electronics Engineers
-
Whitepapers
Iterative Multiuser Detection with Soft Interference Cancellation for Multirate MC-CDMA Systems
Apr 2008
This paper presents an effective multi-rate Multi-User Detector (MUD) for the uplink of Single-Input Multiple Output (SIMO) Multi-Carrier Code Division Multiple Access (MCCDMA) systems. The MUD...
Provided by Kainan University
-
Whitepapers
MC-CDMA Aided Multi-User Space-Time Shift Keying in Wideband Channels
Feb 2013
In this paper, the authors propose Multi-Carrier Code Division Multiple Access (MC-CDMA)-aided Space-Time Shift Keying (STSK) for mitigating the performance erosion of the classic STSK scheme in...
Provided by University of South Florida
-
Whitepapers
A Subcarrier Allocation Scheme for MC-DS-CDMA Systems in the Presence of Multiple Access Interference
Mar 2008
Subcarrier allocation for multiuser MC-DS-CDMA systems is much more complicated when compared to OFDM systems due to the presence of Multiple Access Interference (MAI) when multiple users transmit...
Provided by National University of Singapore
-
White Papers
A QoS Based MAC Protocol for Wireless Ad-Hoc Network
Mar 2011
Multimedia communication over wireless Ad-hoc networks has become the driving technology for many of the important applications, experiencing dramatic market growth and promising revolutionary...
Provided by Cornell University
-
White Papers
Cross-Layer Optimization for Multimedia Transport Over Multicode CDMA Networks
Jun 2011
Most previous work on Code Division Multiple Access (CDMA) considers the Bit Error Ratio (BER) at the physical layer and the Frame Drop Ratio (FDR) at the medium access control layer separately....
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
TDMA Technology: Bringing Increased Capacity and Functionality to Professional Digital Two-Way Radio
Jan 2009
Licensed, professional two-way radio is on the verge of making the biggest leap forward since the invention of the transistor - the move from analog to digital. Digital radio offers many...
Provided by Motorola
-
Whitepapers
Energy Efficient Scheduling in Cross Layer Optimized Clustered Wireless Sensor Networks
Jun 2012
In this paper, the authors present an energy efficient scheduling algorithm for clustered wireless sensor networks. The main objective is to provide optimized Time Division Multiple Access (TDMA)...
Provided by Kurukshetra University
-
Whitepapers
Mitigation of Non- Linear Impairments of W-CDMA Power Amplifier
Dec 2010
In this paper a non-linear Power Amplifier (PA) with memory effects is modeled and a Digital pre-distortion algorithm is presented to mitigate non-linearity effects of a power amplifier. Look-Up...
Provided by Kurukshetra University
-
White Papers
3G Networks Will Evolve, But Will They Cope?
Sep 2009
3G traffic volumes have increased substantially since 2007, and this trend is set to continue with many drivers for further growth. As 3G traffic volumes increase, 3G operators potentially face...
Provided by Unwired Insight
-
White Papers
Scalable Feedback Suppression Mechanism for Multicast Service in Wireless TDMA Network
May 2009
Hybrid ARQ is deployed in error prone wireless network to provide reliable unicast transmission with the positive or negative acknowledgement report. However, the feedback implosion is a...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
A Scalable Feedback Suppression Mechanism for Multicast Service in Wireless TDMA Network
May 2009
Hybrid ARQ is deployed in error prone wireless network to provide reliable unicast transmission with the positive or negative acknowledgement report. However, the feedback implosion is a...
Provided by Institute of Electrical and Electronics Engineers
-
Case Studies
Nortel Networks Case Study: Open Mobile
Jan 2009
Open Mobile is an operator that serves the Puerto Rico wireless market and launched in June of 2007. Open Mobile is characterized by its innovative products and solutions portfolio that it...
Provided by Nortel Networks
-
White Papers
White Paper - WiTDM Vs. 802.11
Apr 2009
WiTDM is one kind of TDMA technology, and a transmission protocol suitable for outdoor equipments with Point to Point and Point to Multi-Point transmission in long distance. Being different from...
Provided by Formosa Wireless Systems
-
White Papers
Long Distance Bridge Solution
Apr 2009
It developed TDMA technology to be first releasing in the world. With the features of high throughput and long distance over 50Km transmission, KW8000 Series provide a robust wireless backhaul...
Provided by Formosa Wireless Systems
-
White Papers
CDMA and LTE: Making the Most of Wireless Broadband - An Overview of Strategies, Issues and Opportunities
Mar 2009
Faced with increased demand for bandwidth-intensive services and rapidly changing subscriber usage patterns, wireless operators need an effective strategy for evolving to LTE networks. CDMA...
Provided by Alcatel-Lucent
-
Whitepapers
Evaluation of the Interference and Noise Suppression Capability of Uniform Linear Array Adaptive Beamforming Antenna
Dec 2011
This paper evaluates the interference and noise suppression capability of uniform linear array adaptive beamforming antenna, at base stations of WCDMA mobile communication system. The...
Provided by International Journal of Computer Theory and Engineering (IJCTE)
-
Whitepapers
Spatial Analysis of Signal Strength in a Wireless Communication Medium for Indoor Geolocation System
Aug 2011
This paper tends to address the problem of having to track devices within an indoor location, Spatial analysis of signal with respect to particular location was carried out, it deploys the use of...
Provided by International Journal of Computer Theory and Engineering (IJCTE)
-
White Papers
The OMH Initiative: Enhancing CDMA Device Availability
Sep 2009
In a very short period of time, mobile technology has managed to move from a luxurious convenience to an indispensable tool. Despite saturation in mature markets, increasingly sophisticated...
Provided by IDG (International Data Group)
-
White Papers
A 2-Slot TDMA Solution for Project 25 Phase 2
Mar 2008
The Project 25 standards development process comprised of the partnership of Project 25, the Telecommunications Industry Association (TIA), and the APCO Project 25 Interface Committee (APIC) has...
Provided by EADS Secure Networks North America
-
White Papers
Frame and Burst Acquisition in TDMA Satellite Communication Networks With Transponder Hopping
Jul 2009
The paper presents frame and burst acquisition in a satellite communication network based on Time Division Multiple Access (TDMA) in which the transmissions may be carried on different...
Provided by University of Nairobi
-
White Papers
Implementation and Evaluation of a TDMA MAC for WiFi-Based Rural Mesh Networks
Oct 2009
WiFi mesh networks with outdoor links have become an attractive option to provide cost-effective broadband connectivity to rural areas, especially in developing regions. It is well understood that...
Provided by Association for Computing Machinery
-
White Papers
Energy Efficient TDMA Sleep Scheduling in Wireless Sensor Networks
Jan 2009
Sleep scheduling is a widely used mechanism in Wireless Sensor Networks (WSNs) to reduce the energy consumption since it can save the energy wastage caused by the idle listening state. In a...
Provided by Illinois Institute of Technology
-
White Papers
eL-MAC: An Enhanced Energy Efficient TDMA-Based MAC Protocol for Wireless Sensor Network
Nov 2008
Wireless sensor network is becoming an attractive field in wireless network research community. The ability of network structure to maximize network lifetime is among the hot topic due to...
Provided by Institute of Electrical and Electronics Engineers
-
White Papers
Development of Energy Aware TDMA-Based MAC Protocol for Wireless Sensor Network System
May 2009
The development of Wireless Sensor Networks (WSN) can be motivated by several types of applications such as habitat monitoring, smart healthcare system, building automation, and etc. These...
Provided by EuroJournals
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White Papers
Towards Optimised Retransmission Reservation in Real-Time Wireless TDMA
Jun 2009
Providing real-time guarantees in wireless networks requires the reservation of transmission time not only for transmissions but also for retransmissions. Retransmissions are required to ensure...
Provided by Trinity College Dublin
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White Papers
An Efficient Algorithm to Find Broadcast Schedule in Ad Hoc TDMA Networks
Dec 2008
The broadcast scheduling is of fundamental importance and practical concern for ad hoc network performance measures such as the communication delay and the throughput. The scheduling problem on...
Provided by Kuwait University
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White Papers
TreeMAC: Localized TDMA MAC Protocol for Real-Time High-Data-Rate Sensor Networks
Jan 2009
Earlier sensor network MAC protocols focus on energy conservation in low-duty cycle applications, while some recent applications involve real-time high-data-rate signals. This motivates one to...
Provided by Washington State University
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White Papers
Infuse: A TDMA Based Data Dissemination Protocol for Sensor Networks
Jan 2009
Reliable dissemination of bulk data is one of the important problems in sensor networks. For example, programming or upgrading the software in sensors at run-time requires reliable dissemination...
Provided by Michigan State University
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White Papers
TDMA for Long Distance Wireless Networks
Sep 2009
Off late the UC Berkeley TIER Project studied the need to deploy network infrastructure to emerging regions. Their goal was to "Address the challenges in bringing the Information Technology...
Provided by University of Cambridge
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White Papers
A Real-Time Traffic Packet Scheduler for a Novel TDMA MAC Protocol
Jun 2008
Wireless mesh networks are being rapidly deployed in both urban and rural areas impacting a large fraction of the world's population. As the profile of the average user changes so does the...
Provided by University of California
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White Papers
FAMA/TDMA Hybrid MAC for Wireless Sensor Networks
Nov 2008
Wireless sensor networks are an emerging area of interest among embedded and wireless research groups around the globe. It is envisioned that these low power computers will become the enabling...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Development of an H-TDMA for Long-Term Unattended Measurement of the Hygroscopic Properties of Atmospheric Aerosol Particles
Jun 2009
A new hygroscopic tandem differential mobility analyzer (H-TDMA) has been constructed at Lund University within the frameworks of the EU FP6 Infrastructure Project EUSAAR (www.eusaar.org). The aim...
Provided by European Geosciences Union
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White Papers
Performance Analysis of Transmit Antenna Selection in Broadcast MISO Channels
Apr 2009
Time-Division Multiple Access (TDMA) with Transmit Antenna Selection (TAS) is a simple and feasible transmission scheme for broadcast multiple-input single-output (BC-MISO) channels. Compared to...
Provided by Universidad de Cantabria
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White Papers
Soft-TDMAC: A Software TDMA-Based MAC Over Commodity 802.11 Hardware
Jan 2009
This paper designs and implements Soft-TDMAC, a software Time Division Multiple Access (TDMA) based MAC protocol, running over commodity 802.11 hardware. Soft-TDMAC has a synchronization...
Provided by University of California
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White Papers
A Runtime Stability Analysis of Clock Synchronization Precision on a Time-Triggered Bus Prototype
Mar 2009
This paper provides a runtime stability analysis of the Daisy-Chain clock synchronization algorithm running over CASCA - a time-triggered extension of CAN bus. Themain objective is to show with...
Provided by Universidade Federal do Rio Grande do Sul
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White Papers
Power-Efficient Resource Allocation and Quantization for TDMA Using Adaptive Transmission and Limited-Rate Feedback
Sep 2008
Power-efficient scheduling and resource allocation are critical tasks for wireless sensor networks as well as commercial and tactical radios relying on IEEE access standards for power-limited...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
An Efficient TDMA Scheduling Scheme for Wireless Sensor and Actor Networks
Jun 2008
This paper presents an efficient time slot assignment algorithm for a Wireless Sensor and Actor Network (WSAN), which consists of stationary sensors for detecting events and mobile actors for...
Provided by Institute of Electronics, Information and Communication Engineers
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White Papers
Topology-Transparent Distributed Scheduling in Multi-Hop Wireless Networks
May 2009
Transmission scheduling is a key design problem in wireless multi-hop networks and many scheduling algorithms have been proposed to maximize the spatial reuse and minimize the Time-Division...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Joint Power Control and Link Scheduling in Wireless Networks for Throughput Optimization
Aug 2009
This paper concerns the problem of finding the minimum-length TDMA frame of a power-controlled wireless network subject to traffic demands and SINR (signal-to-interference-plus-noise ratio)...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
Distributed Call Admission Protocol for Multi-Channel Multi-Radio Wireless Networks
Dec 2007
This paper proposes a Distributed Call Admission Control protocol (DCAC) to provide bandwidth and delay guaranteed Quality of Service (QoS) in multihop wireless mesh networks, by exploiting the...
Provided by Institute of Electrical and Electronics Engineers
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White Papers
MAC Protocol Adaptation in Cognitive Radio Networks: An Experimental Study
May 2009
This paper presents an adaptive MAC (AMAC) protocol for supporting MAC layer adaptation in cognitive radio networks. MAC protocol adaptation is motivated by the flexibility of emerging...
Provided by Rutgers, State University of New Jersey
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White Papers
Distributed Neighborhood Admission Code Assignment for Mobile Ad Hoc Networks
Jan 2009
CDMA has proven to be a superior technology for wireless communication in cellular environments. However, it has not been fully exploited in ad hoc networks; several key challenges have to be...
Provided by State University of New York
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White Papers
Experimental Analysis of Receiver Performance of Optical CDMA System Using DPSK and OOK Modulation Through Balanced Detection and Optical Thresholding Techniques
Nov 2009
This paper is the performance of Optical Code Division Multiple Access (OCDMA) system is studied using Differential Phase Shift Keying (DPSK) with Balanced Detection (BD) and optical thresholding....
Provided by Anna University
