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Institute of Electrical & Electronic Engineers
(11421 results)-
Whitepapers
Social-Aware Routing for Wireless Mesh Networks
August 2, 2012, 12:00am PDT
In Wireless Mesh Networks (WMN), most routing algorithms use broadcast at some stage of the path discovery process, thereby taking up a large proportion of the network bandwidth. Intelligent...
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Whitepapers
Interference Evaluation in Ad-Hoc Cognitive Radio Networks
August 2, 2012, 12:00am PDT
In this paper, the authors evaluate the total ergodic capacity of channels in an ad-hoc cognitive radio network under interference constraint at the primary users. It is assumed that all links...
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Whitepapers
Combined Hop Count and Received Signal Strength Routing Protocol for Mobility-Enabled WSNs
August 2, 2012, 12:00am PDT
In this paper, a new routing protocol is proposed for Wireless Sensor Networks (WSNs). The scenario taken is a WSN to be deployed non-intrusively in moving vehicles. WSNs are a class of wireless...
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Whitepapers
Inter-Relay Interference Cancellation for AF MIMO Two-Path Relay Systems
August 2, 2012, 12:00am PDT
This paper considers amplify-and-forward, multiple-input multiple-output, two-path relay systems in which the Inter-Relay Interference (IRI) between two relay nodes leads to a degradation of...
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Whitepapers
Effects of Feedback Delay on the Performance of Multiple Relay Network Over Nakagami-M Fading Channels
August 2, 2012, 12:00am PDT
This paper studies the effect of feedback delay on the performance of Amplify-and-Forward (AF) relay selection over Nakagami-m fading environment. Spatial diversity can be improved by employing...
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Whitepapers
Bit Error Rate Performance of Generalized Frequency Division Multiplexing
August 2, 2012, 12:00am PDT
Generalized frequency division multiplexing is a non-orthogonal, digital multicarrier transmission scheme with attractive features that address the requirements of emerging applications of...
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Whitepapers
Measurement and Prediction of Turbo-SIC Receiver Performance for LTE
August 2, 2012, 12:00am PDT
Within the ongoing global research effort on future wireless communication systems, adaptive allocation of time, code, space and frequency resources based on Channel State Information at the...
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Whitepapers
A Compressed HARQ Feedback for Device-to-Device Multicast Communications
August 2, 2012, 12:00am PDT
An efficient receiving status feedback in multicast communications can improve the system performance considerably. In this paper, the authors propose a novel compressed Hybrid Automatic Repeat...
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Whitepapers
A Low-Complexity Distributed Inter-Cell Interference Coordination (ICIC) Scheme for Emerging Multi-Cell HetNets
August 2, 2012, 12:00am PDT
In this paper, the authors propose a low-complexity distributed Inter-Cell Interference Coordination (ICIC) for emerging multicell HetNets (Heterogeneous Networks). The proposed scheme is quickly...
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Whitepapers
GFDM Interference Cancellation for Flexible Cognitive Radio PHY Design
August 2, 2012, 12:00am PDT
Generalized Frequency Division Multiplexing (GFDM) is a new digital multicarrier concept. The GFDM modulation technique is extremely attractive for applications in a fragmented spectrum, as it...
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Whitepapers
An Interference Alignment Scheme for 60 GHz Millimeter-Wave Communication System
August 2, 2012, 12:00am PDT
60GHz millimeter wave communication systems usually use directional beamforming to compensate high propagation loss in this band. To fully exploit its potential of spatial reuse owing to...
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Whitepapers
Uplink Coordinated Scheduling Based on Resource Sorting
August 2, 2012, 12:00am PDT
Uplink Inter-Cell Interference (ICI) and interference fluctuation degrades the uplink throughput of LTE/LTE-Advanced systems seriously. To deal with these problems, a coordinated scheduling method...
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Whitepapers
Exact Analytical Solution for Dual-Hop and Opportunistic Dual-Hop AF Relaying Systems
August 2, 2012, 12:00am PDT
Novel exact closed-form expressions are derived for the Probability Density Function (PDF) and the Cumulative Distribution Function (CDF) of the instantaneous received end-to-end Signal-to-Noise...
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Whitepapers
An SINR Balancing Technique for a Cognitive Two-Way Relay Network
August 2, 2012, 12:00am PDT
The authors propose a two-way relay based spatial multiplexing technique for a Cognitive Radio relay network (CR). The relay coefficients and the transmission powers are optimized to maximize the...
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Whitepapers
Interference Evaluation for Distributed Collaborative Radio Resource Allocation in Downlink of LTE Systems
August 2, 2012, 12:00am PDT
Collaboration among neighbouring eNBs in radio resource allocation, in the absence of a centralized control unit, is one of the challenges raised from the flat architecture suggested for the Long...
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Whitepapers
Utility-Based Dynamic Spectrum Aggregation Algorithm in Cognitive Radio Networks
August 2, 2012, 12:00am PDT
In this paper, the authors propose a utility-based spectrum aggregation algorithm to enhance the performance of a cognitive radio network considering multiple objectives: maximization of overall...
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Whitepapers
Computationally Efficient PAPR Reduction Schemes in OFDM-Based Satellite Communication Systems
August 2, 2012, 12:00am PDT
Due to the nonlinear characteristics of the High Power Amplifier (HPA), the employment of Orthogonal Frequency Division Multiplexing (OFDM) based modulation schemes results in significant...
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Whitepapers
A Comparison of Reactive, Grid and Hierarchical Location-Based Services for VANETs
August 2, 2012, 12:00am PDT
VANETs (Vehicular Ad-hoc NETworks) are a special case of MANETs (Mobile Ad-hoc NETworks). Their main feature is the high mobility range of nodes, which causes topology changes and frequent...
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Whitepapers
Tomorrow's In-Car Interconnect? a Competitive Evaluation of IEEE 802.1 AVB and Time-Triggered Ethernet (AS6802)
August 2, 2012, 12:00am PDT
Ethernet-based in-car communication is currently a hot topic in the automotive industry. Soon Ethernet will start to oust MOST bus in its domain of info- and entertainment applications. However,...
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Whitepapers
Legal Assessment of Context Prediction Techniques
August 2, 2012, 12:00am PDT
Sensors built into current Smartphones or in modern facilities are becoming ubiquitous and influence the people daily lives more and more. Hence, services that proactively adapt their behaviour to...
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Whitepapers
Request-Adaptive Packet Dissemination for Contextaware Services in Vehicular Networks
August 2, 2012, 12:00am PDT
Many applications in vehicular networks are context-aware in that the observations of sensing nodes, potentially vehicles, at a target location should be made available to the requesting node...
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Whitepapers
Analysis of the Multi-Cell Correlation of the Slow Fading From UMTS Measurements and Its Impact on Radio Network Planning
August 2, 2012, 12:00am PDT
In order to further improve the cell edge throughput prediction for network planning and optimisation purposes the correlation properties of the received power from pairs of cells is investigated....
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Whitepapers
Correlation Evaluation on Small LTE Handsets
August 2, 2012, 12:00am PDT
Consumer's demand for increased data access through their wireless devices has driven the development of multi-antenna systems in small handsets. Multiple-Input Multiple-Output (MIMO) and...
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Whitepapers
Cost-Effective and Feasible Handoff Application for Mobile Phones
August 2, 2012, 12:00am PDT
Heterogeneous networks with different wireless technologies increase the availability of Internet services (i.e., cloud services). However, latest mobile phones with at least two interfaces only...
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Whitepapers
Throughput Modeling of Differentiation Schemes for IEEE 802.11e MAC Protocol
August 2, 2012, 12:00am PDT
Most recent analyses on IEEE802.11e Quality of Service (QoS)-aware Enhanced Distributed Coordination function (EDCA) require a large degree of complexity, making it difficult to apply them to a...
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Whitepapers
Traffic Differentiation - A Basic Step Towards Providing Endto-End QoS on the Train-to-Wayside Wireless Communication System
August 2, 2012, 12:00am PDT
The authors developed a network platform that is responsible for an uninterrupted and seamless connectivity from the train to the wayside through heterogeneous wireless access technologies....
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Whitepapers
A New Dynamic Reservation Protocol for Many-to-One Multi-Access With Long Propagation Delay
August 2, 2012, 12:00am PDT
Reservation multi-access protocol is a natural choice in wireless networks with high inter-nodal propagation delay and sporadic communications. There have been some proposals in delay-intensive...
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Whitepapers
Power Savings and Performance Analysis in Wireless Networks
August 2, 2012, 12:00am PDT
This paper investigates the effects of power saving strategies on the performance of Wireless Local Area Networks (WLANs). More specifically, a power management model is formulated as an integer...
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Whitepapers
Physical Layer Network Coding With Channel and Delay Estimation
August 2, 2012, 12:00am PDT
Decode-and-forward Physical Layer Network Coding (PLNC) is one of the promising high-performance techniques for wireless relay networks, but little has been reported on the case of asynchronous...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
MCS and Sub-Band Selection for Downlink Interference Coordination in LTE-A Femtocells
August 2, 2012, 12:00am PDT
This paper proposes a decentralized algorithm for interference coordination in LTE-A networks, based on the exchange of information (pricing) at control plane level. In the authors' approach,...
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Whitepapers
Evaluation of a Collaborative-Based Filter Technique to Proactively Detect Pedestrians at Risk
August 2, 2012, 12:00am PDT
Tragically, traffic accidents involving pedestrians or cyclists cause thousands of fatalities and serious injuries worldwide every year. Therefore, improving the safety of vulnerable road users is...
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Whitepapers
Automatic Modulation Classification Using Information Theoretic Similarity Measures
August 2, 2012, 12:00am PDT
Modern wireless systems employ adaptive techniques to provide high throughput while observing desired coverage, Quality of Service (QoS) and capacity. An alternative to further enhance data rate...
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Whitepapers
Cognitive AF Relay Schemes for Uplink Transmission in Macrocellular Networks
August 2, 2012, 12:00am PDT
Cognitive radio has been proposed to improve the spectrum utilization by allowing the unlicensed Secondary Users (SUs) to access the spectrum resources licensed to the Primary Users (PUs)...
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Whitepapers
Link Adaptation Control in LTE Uplink
August 2, 2012, 12:00am PDT
Long Term Evolution (LTE) technology aims at addressing the increasing demand for mobile multimedia services in high user density areas. Channel aware scheduling across wide system bandwidth is...
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Whitepapers
Challenges for Frequency-Reconfigurable Antennas in Small Terminals
August 2, 2012, 12:00am PDT
For the 4th Generation (4G) of mobile communications the Long Term Evolution (LTE) standard requires the mobile terminals to operate in a significant amount of bands and a very wide range of...
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Whitepapers
Vehicular Traffic Modeling Governed by Cellular Phone Trajectories
August 2, 2012, 12:00am PDT
This paper briefly outlines the combination of an Agent Based Modeling (ABM) framework for modeling the flow of traffic in an urban center, using a 3D gaming platform and incorporating real world...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Dynamic Resource Assignment Method for Uncoordinated Wireless Networks
August 2, 2012, 12:00am PDT
A dynamic frequency reuse method applicable to uncoordinated and (possibly) dense wireless networks is presented in this paper. The main objective is to protect mobile users located near the cell...
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Whitepapers
Iterative Intercarrier Interference Mitigation for Pilot-Aided OFDM Channel Estimation Based on Channel Linearizations
August 2, 2012, 12:00am PDT
Orthogonal Frequency Division Multiplexing (OFDM) became a popular transmission approach since it suppresses Inter-Symbol Interference (ISI) due to large channel delays. However, Inter-Carrier...
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Whitepapers
Movement Direction Based Path Selection Strategy in Converged Cellular and Wireless Sensor Networks
August 2, 2012, 12:00am PDT
Wireless sensor networks have been applied in many service application areas, which consist of numerous autonomous sensor nodes with limited energy. In order to optimize the wireless sensor...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
VCAST: An Infrastructure-Less Vehicular Traffic Information Service With Distance-Sensitive Precision
August 2, 2012, 12:00am PDT
In this paper, the authors describe VCAST, an algorithm for obtaining individual vehicle location as well as aggregate traffic information over an infrastructure-less multi-hop wireless vehicular...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Robust Extreme Energy Efficient Sensor Networks
September 19, 2008, 12:00am PDT
Despite much research on sensor networks in general and on event-response applications in particular, simultaneously achieving the desired timeliness of response, longevity, and wide-area coverage...
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Whitepapers
Dynamic Huffman Addressing in Wireless Sensor Networks Based on the Energy Map
September 29, 2008, 12:00am PDT
This paper introduces a new dynamic addressing technique for prolonging the operational duration of duty cycled wake-up radios found in wireless sensor networks. A Wireless Sensor Network (WSN)...
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Whitepapers
Barrier Coverage With Airdropped Wireless Sensors
September 30, 2008, 12:00am PDT
Barrier coverage of a wireless sensor network aims at detecting intruders crossing the network. It provides a viable alternative for monitoring boundaries of battlefields, country borders, coastal...
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Whitepapers
Perimeter Coverage With Wireless Sensor Networks
October 7, 2008, 12:00am PDT
In this paper, the authors study the problem of covering the perimeter of a region of interest with a wireless sensor network in order to monitor the trespassing in surveillance applications. They...
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Whitepapers
Sdda: Sparse and Dynamic In-Network Data Aggregation in Sensor Nets
August 22, 2008, 12:00am PDT
In-network data aggregation is an effective method to reduce the amount of data transmitted and therefore saves energy consumption in sensor networks. However, data aggregation removes the...
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Whitepapers
A Fully-Distributed Control Time Slot Assignment Protocol for Large Wireless Mesh Networks
September 10, 2008, 12:00am PDT
A control time slot assignment protocol is developed for Time Division Multiple Access (TDMA) and Time Division Duplex (TDD)-based large Wireless Mesh Networks (WMNs). Through the protocol, each...
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Whitepapers
Automatic Repeat Request (ARQ) Over TDMA-Based Mesh Network
October 6, 2008, 12:00am PDT
The use of Automatic Repeat-reQuest (ARQ) over a Mobile Ad-hoc NETwork (MANET) presents unique challenges in handling signaling, connection identification, and implementation. This paper describes...
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Whitepapers
Low-Latency Multichannel Cut-Through Vs. CSMA/CA Wireless Mesh Networking
September 14, 2008, 12:00am PDT
Initial entry during deployment requires tactical networks supporting voice, video, and data requirements to be established quickly given little existing telecommunication infrastructure. Wireless...
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Whitepapers
Quantifying the Diversity of OFDMA Subchannels
October 31, 2007, 12:00am PDT
Orthogonal Frequency Division Multiple Access (OFDMA) has been chosen as the radio transmission technology for future 4G wireless networks. One important reason for this choice is that OFDMA...
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Whitepapers
Radio Resource Management for Broadcast Services in OFDMA-Based Networks
April 17, 2008, 12:00am PDT
The next generation of wireless networks (LTE, WiMAX and UMB) will have sufficient capacity to support video broadcasts in addition to unicast services such as voice and data. Since broadcast...
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Whitepapers
Radio Resource Management Strategies for Distributed Antenna Systems
February 18, 2010, 12:00am PST
With the increasing throughput demands of wireless users, operators will need to build wireless networks with significantly larger capacities than those presently available. Therefore for the next...
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Whitepapers
Downlink VoIP Capacity With Network-Synchronized Cyclic Beamswitching
March 23, 2010, 12:00am PDT
The next generation of wireless networks (e.g., Long Term Evolution (LTE) and WiMAX) use multiple techniques to improve channel spectral efficiencies. In this paper, the authors focus on one such...
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Whitepapers
A Novel Solution for Inter-Technology Handover
March 30, 2010, 12:00am PDT
The authors present a novel solution to the problem of handover between two different wireless technologies. They illustrate this solution with the example of LTE (Long Term Evolution) to CDMA...
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Whitepapers
Downlink Coordinated Beamswitching for VoIP Traffic
July 27, 2010, 12:00am PDT
The next generation of wireless networks (e.g., Long Term Evolution (LTE) and WiMAX) uses multiple techniques to improve channel spectral efficiencies. In this paper, the authors focus on one such...
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Whitepapers
Coordinated Resource Allocation for Downlink Transmissions: The Intra-Site Case
July 27, 2010, 12:00am PDT
The latest generation of wireless networks use OFDMA (Orthogonal Frequency Division Multiple Access) transmission technology in the downlink (e.g, WiMAX and LTE). The downlink is divided into...
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Whitepapers
Uplink Power Control and Interference Management for the Support of QoS Applications
September 3, 2010, 12:00am PDT
The next generation of cellular networks (Long Term Evolution) uses SC-FDMA (Single Carrier Frequency Division Multiple Access) on the uplink. In SC-FDMA, the uplink resources assigned to a user...
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Whitepapers
Coordinated Radio Resource Management for the LTE Downlink: The Two-Sector Case
April 14, 2010, 12:00am PDT
The authors consider the downlink of an Orthogonal Frequency Division Multiple Access (OFDMA) network. OFDMA transmission technology will be used in the next generation of wireless networks such...
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Whitepapers
Precoding Performance With Codebook Feedback in a MIMO-OFDM System
April 26, 2011, 12:00am PDT
Limited feedback precoding is part of the LTE standard. Despite standardization, important fundamental questions, especially relating to the performance due to the use of codebooks and receiver...
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Whitepapers
Sphere Decoding for Spatial Modulation
April 26, 2011, 12:00am PDT
In this paper, Sphere Decoding (SD) algorithms for Spatial Modulation (SM) are developed to reduce the computational complexity of Maximum - Likelihood (ML -) optimum detectors, which have a...
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Whitepapers
Decoding the 'Nature Encoded' Messages for Distributed Energy Generation Control in Microgrid
April 26, 2011, 12:00am PDT
The communication for the control of Distributed Energy Generation (DEG) in microgrid is discussed. Due to the requirement of real-time transmission, weak or no explicit channel coding is used for...
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Whitepapers
Doped LT Decoding With Application to Wireless Broadcast Service
April 26, 2011, 12:00am PDT
In this paper, the authors consider the doped decoder for Luby-Transform (LT) codes, where based on the decoder feedback, the decoding process is revived by retransmission of the information...
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Whitepapers
Error Exponents for Multi-Source Multi-Relay Parallel Relay Networks With Limited Backhaul Capacity
April 26, 2011, 12:00am PDT
In this paper, the authors assess the random coding Error Exponents (EEs) corresponding to Decode-and-Forward (DF), Compress-and-Forward (CF) and Quantize-and-Forward (QF) relaying strategies for...
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Whitepapers
Using Distributed Rotations for a Low-Complexity Dynamic Decode-and-Forward Relay Protocol
April 26, 2011, 12:00am PDT
In this paper, the authors propose to implement the Dynamic Decode-and-Forward (DDF) protocol with distributed rotations. In addition to being the first minimum-delay implementation of the DDF...
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Whitepapers
Maximum Likelihood Receiver for MMSE Relaying
April 26, 2011, 12:00am PDT
One major goal for future wireless communication systems is a uniform user experience. In order to solve this problem, additional relay nodes can be used to support the communication. Up to now...
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Whitepapers
Asymptotic Analysis for Nakagami-m Fading Channels With Relay Selection
April 26, 2011, 12:00am PDT
In this paper, the authors analyze the asymptotic outage probability performance of both Decode-and-Forward (DF) and Amplify-and-Forward (AF) relaying systems using partial relay selection and the...
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Whitepapers
A Near-Capacity GDFE-Like Precoder With Reduced Feedback Overhead for MIMO Broadcast Channel
April 26, 2011, 12:00am PDT
Downlink MultiUser Multiple Input Multiple Output (MU-MIMO) systems are of increasing importance in current and upcoming wireless applications. The improvement in data rates offered by such...
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Whitepapers
On the Performance of Receive ZF MIMO Broadcast Systems With Channel Estimation Errors
April 26, 2011, 12:00am PDT
While the Zero-Forcing (ZF) transmit beamforming is a widely used technique for realizing Multiple-Input Multiple-Output (MIMO) broadcast transmissions, the ZF receiver combined with multiuser...
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Whitepapers
Near-Far Resistant MIMO Iterative Receiver for Uplink LTE
April 26, 2011, 12:00am PDT
Equalization for uplink MIMO SC-FDMA LTE multi-stream transmission is considered utilizing linear filtering methods and redundancy in the form of channel coding. The equalizer jointly removes...
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Whitepapers
Optimal QoS-Constrained Resource Allocation in Downlink and Uplink Multicarrier Systems
April 26, 2011, 12:00am PDT
When formulated as constrained optimizations of various kinds, Resource Allocation (RA) in wireless communication systems involves practically not only continuous variables such as transmit power,...
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Whitepapers
Max-Min Fairness Linear Transceiver Design for a Multi-User MIMO Interference Channel
April 26, 2011, 12:00am PDT
Consider the max-min fairness linear transceiver design problem for a multi-user MIMO interference channel. Assuming perfect channel knowledge, this problem can be formulated as the maximization...
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Whitepapers
A Fast Bit Removal Greedy Algorithm for Multiuser DMT-Based Systems
April 26, 2011, 12:00am PDT
Adaptive bit allocation for DMT-based systems is critical for preventing performance degradation due to poor allocation of bits given challenging channel and interference conditions. In this...
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Whitepapers
Lagrange Multiplier Optimization for Optimal Spectrum Balancing of DSL With Logarithmic Complexity
April 26, 2011, 12:00am PDT
Lagrange Dual Optimization (LDO) technique is a powerful tool for solving constrained optimization problems in and is generally considered to be optimal in the literature. LDO relaxes a...
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Whitepapers
Improved Loading Rule for FEXT Noise Impaired Users in Vectored VDSL Systems
April 26, 2011, 12:00am PDT
The paper proposes an original rule that aims at maximizing the number of bits loaded to each subcarrier of Far-End CROSSTalk (FEXT) noise impaired VDSL systems while guaranteeing an error...
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Whitepapers
Chip Equalization Using Subband Adaptive Decomposition in Downlink MIMO DS-UWB
April 26, 2011, 12:00am PDT
An adaptive subband chip-equalizer is investigated for downlink Multiple-Input Multiple-Output (MIMO) Direct Sequence (DS) Ultra-WideBand (UWB) systems to cope with the Inter-Symbol Interference...
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Whitepapers
Maximum SINR Prefiltering for Reduced-State Trellis-Based Equalization
April 26, 2011, 12:00am PDT
The authors consider prefiltering for a single - carrier transmission over frequency - selective channels, where reduced - state trellis - based equalization is employed at the receiver, such as...
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Whitepapers
Precoding Aided Iterative FDE for Reduced CP Single-Carrier Block Transmission Systems
April 26, 2011, 12:00am PDT
Single-carrier block transmission systems with Frequency Domain Equalization (FDE) suffers from power and bandwidth efficiency loss due to the cyclic extension. Conventional schemes to reduce the...
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Whitepapers
Quantized CDI Based Tomlinson Harashima Precoding for Broadcast Channels
April 26, 2011, 12:00am PDT
For the MultiUser Multiple-Input Single-Output (MU-MISO) system in a DownLink (DL) scenario, the authors design a non-linear precoding scheme, namely the Spatial Tomlinson-Harashima Precoder...
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Holistic Design and Optimization for Scalable Wireless/Wired Hybrid Access Networks
April 26, 2011, 12:00am PDT
Wireless/wired hybrid network offers a promising solution to future broadband access. Exploiting the potential of a hybrid network requires an integrated effort on network design and optimization....
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Joint Scheduling and Bandwidth Allocation Methods for 10G-EPON and Beyond
April 26, 2011, 12:00am PDT
Dynamic bandwidth allocation and grant scheduling are among the major issues in the design of passive optical networks. In this paper, the authors investigate the problem of optimal scheduling and...
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Design Of A PI Rate Controller for Mitigating SIP Overload
April 26, 2011, 12:00am PDT
Recent collapses of SIP servers in the carrier networks (e.g., Skype outage) indicate that the built-in SIP overload control mechanism cannot mitigate overload effectively. In this paper, by...
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