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EURASIP
(609 results)-
Whitepapers
Broadcast Secrecy Via Key-Chain Based Encryption in Single-Hop Wireless Sensor Networks
August 27, 2010, 12:00am PDT
Broadcast is used in wireless sensor networks for operations such as software updates, network queries, and command dissemination. Though authentication of broadcast messages is probably the most...
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White Papers
A SDR Platform for Mobile Wi-Fi/3G UMTS System on a Dynamic Reconfigurable Architecture
August 28, 2009, 12:00am PDT
As wireless communication standards evolve, Wi-Fi and WCDMA based 3G UMTS are still the major technologies widely deployed to provide high speed wireless internet access and mobile communication...
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Whitepapers
Accelerometer-Assisted 802.11 Rate Adaptation on Mobile WiFi Access
August 7, 2012, 12:00am PDT
The expansion of 802.11 AP deployments provides opportunistic Wi-Fi access in underground Mass Rapid Transit (MRT) system. However, such vehicular network faces the challenge of limited time for...
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White Papers
Joint Pre-Echo Control and Frame Erasure Concealment for VoIP Audio Codecs
August 28, 2009, 12:00am PDT
Pre-echo artifacts are a common problem of transform audio codecs owing to their comparatively large block lengths. If such codecs are used in Voice-over-IP (VoIP) applications, the concealment of...
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Whitepapers
Non-Linear Precoding Approaches for Non-Regenerative Multiuser MIMO Relay Systems
August 31, 2012, 12:00am PDT
In this paper, the authors consider the design of Minimum Mean Square Error (MMSE) transceivers for non-regenerative multiuser Multiple-Input Multiple-Output (MIMO) relay systems, where the main...
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Whitepapers
2D Bar-Codes for Authentication: A Security Approach
August 31, 2012, 12:00am PDT
In this paper, the authors consider a good authentication system using 2D Bar-Codes (2D-BC) from the point of view of the opponent. An estimator that one can use to product a fake was proposed and...
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Whitepapers
A Network Coding Scheduling for Multiple Description Video Streaming Over Wireless Networks
August 31, 2012, 12:00am PDT
Network Coding (NC) can achieve the maximum information flow in a network by allowing nodes to combine received packets before retransmission. Several papers have shown NC to be beneficial in...
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Whitepapers
A Network Shadow Fading Model for Autonomous Infrastructure Wireless Networks
August 31, 2012, 12:00am PDT
In traditional cellular networks the Base Stations (BSs) are more or less regularly deployed. In the channel model for such networks, correlated channel gains are only considered between a BS and...
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Whitepapers
Asynchronous Diffusion Adaptation Over Networks
August 31, 2012, 12:00am PDT
In this paper, the authors explain about the asynchronous behavior of diffusion adaptation strategies for distributed optimization over networks. Under the assumed model, agents in the network may...
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Whitepapers
Blind Source Extraction for a Combined Fixed and Wireless Sensor Network
August 31, 2012, 12:00am PDT
The emergence of wireless microphones in everyday life creates opportunities to exploit spatial diversity when using fixed microphone arrays combined with these wireless microphones. Traditional...
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Whitepapers
Collaborative Diffusive Source Localization in Wireless Sensor Networks
August 31, 2012, 12:00am PDT
The authors propose a collaborative, energy efficient method for diffusive source localization in wireless sensor networks. The algorithm is based on distributed and iterative Maximum-Likelihood...
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Whitepapers
Compression Scheme for Increasing the Lifetime of Wireless Intelligent Sensor Networks
August 31, 2012, 12:00am PDT
Wireless Intelligent Sensor Networks (WISN) are characterized by the ability of self-organization and auto-coordination for long periods of time. In most cases, the limitation of time function is...
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Whitepapers
Compressive Linear Network Coding for Efficient Data Collection in Wireless Sensor Networks
August 31, 2012, 12:00am PDT
The authors address the problem of data collection in a wireless sensor network. Network coding is used for data delivery. The correlation between the measurements is exploited to recover the data...
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Whitepapers
Cooperative Communications with HARQ in a Wireless Mesh Network Based on 3GPP LTE
August 31, 2012, 12:00am PDT
In this paper, the authors present some results of the FP7 ICT-LOLA (achieving LOw LAtency in wireless communications) project on the design of a clusterized wireless mesh network based on 3GPP...
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Whitepapers
Coordinated Scheduling and Beamforming for Multicell Spectrum Sharing Networks Using Branch & Bound
August 31, 2012, 12:00am PDT
The authors consider the downlink of a multi-cell network where neighboring multi-antenna base stations share the spectrum and coordinate their frequency and spatial resource allocation strategies...
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Whitepapers
Distributed Distortionless Signal Estimation in Wireless Acoustic Sensor Networks
August 31, 2012, 12:00am PDT
Wireless microphone networks or so-called Wireless Acoustic Sensor Networks (WASNs) consist of physically distributed microphone nodes that exchange data over wireless links. In this paper, the...
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Whitepapers
Distributed Estimation and Equalization of Room Acoustics in a Wireless Acoustic Sensor Network
August 31, 2012, 12:00am PDT
In this paper, the use of a Wireless Acoustic Sensor Network (WASN) for the estimation and equalization of room acoustics is proposed as a flexible and promising alternative to the traditional...
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Whitepapers
Energy Aware Greedy Subset Selection for Speech Enhancement in Wireless Acoustic Sensor Networks
August 31, 2012, 12:00am PDT
A wireless acoustic sensor network is envisaged that relies on a collection of spatially distributed microphones, which observe a speech signal together with additive background noise. The...
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Whitepapers
Exploiting Structure of Spatio-Temporal Correlation for Detection in Wireless Sensor Networks
August 31, 2012, 12:00am PDT
In dense Wireless Sensor Networks (WSN) consecutive measurements obtained by sensors are spatio-temporally correlated in applications that involve the observation of the variation of a physical...
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Whitepapers
Joint User Selection and Beamforming in Interference Limited Cognitive Radio Networks
August 31, 2012, 12:00am PDT
The authors consider optimal beamforming and user admission in cellular secondary networks where radio access to the licensed spectrum is granted under the premise that the interference level...
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Whitepapers
Multi-Domain Virtual Content-Aware Networks Mapping on Network Resources
August 31, 2012, 12:00am PDT
For Future Internet multimedia distribution with different levels of guarantees a transport solution may consist in creation of parallel multi-domain Virtual Content Aware Networks (VCAN)...
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Whitepapers
Multi-View Human Action Recognition Under Occlusion Based on Fuzzy Distances and Neural Networks
August 31, 2012, 12:00am PDT
While action recognition methods exploiting information coming from multiple viewing angles have been proposed in order to overcome the known viewing angle assumption of single-view methods, they...
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Whitepapers
Navigation System for Elderly Care Applications Based on Wireless Sensor Networks
August 31, 2012, 12:00am PDT
The paper presents the development of a navigation system based on wireless sensor networks specially designed for elderly care applications. The main constraints of the application scenario are...
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Whitepapers
NT-SIM: A Co-Simulator for Networked Signal Processing Applications
August 31, 2012, 12:00am PDT
In networked signal processing systems, network nodes that perform embedded processing on sensory inputs and other data interact across wired or wireless communication networks. In such...
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Whitepapers
On the Performance of H.264/MVC Over Lossy IP-Based Networks
August 31, 2012, 12:00am PDT
In this paper, the authors explain the performance of different packetization schemes (single NAL Unit, aggregation packet and Fragmentation Unit) for the emerging H.264/MVC standard, in terms of...
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Whitepapers
Optimization Approach to Joint Cell, Channel and Power Allocation in Wireless Communication Networks
August 31, 2012, 12:00am PDT
In multi-cell wireless networks the resource allocation task includes the selection of the serving cell and the allocation of channels and transmission powers. While all of these tasks have been...
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Whitepapers
Pilot Design for Non-Contiguous Spectrum Usage in OFDM-Based Cognitive Radio Networks
August 31, 2012, 12:00am PDT
This paper, challenges regarding the provision of Channel State Information (CSI) in Non-Contiguous Orthogonal Frequency Division Multiplexing (NC-OFDM) and Cognitive Radio (CR) systems are...
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Whitepapers
Real Time Indoor Tracking of Tagged Objects with a Network of RFID Readers
August 31, 2012, 12:00am PDT
The authors propose a method for accurate real time indoor tracking of tagged objects in Ultra High Frequency (UHF) and Radio Frequency IDentification (RFID) systems. The method is based on...
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Whitepapers
Scalability Analysis of a Media Aware Network Element
August 31, 2012, 12:00am PDT
An architecture based on new concepts of Content Aware Networking (CAN) and Network Aware Applications (NAA) is proposed in FP7 ALICANTE research project as a better support for multimedia flows...
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Whitepapers
Sequential Remote Source Coding in Wireless Acoustic Sensor Networks
August 31, 2012, 12:00am PDT
In this paper, the authors consider source coding in Wireless Acoustic Sensor Networks (WASNs). AWASN is a network of sensors, where each sensor is equipped with a microphone and thereby forming a...
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Whitepapers
Sequential Wireless Sensor Network Discovery Using Wide Aperture Array Signal Processing
August 31, 2012, 12:00am PDT
In this paper, a novel wireless sensor network discovery algorithm is presented which estimates the locations of a large number of low powered, randomly distributed sensor nodes. Initially, all...
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Whitepapers
Towards a P2P Videoconferencing System Based on Low-Delay Network Coding
August 31, 2012, 12:00am PDT
The authors present ToroStream, their P2P video streaming protocol designed around Network Coding (NC), and they investigate its applicability to low-delay applications such as live video...
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Whitepapers
Traffic Estimation for MAC Protocols in Distributed Detection Wireless Sensor Networks
August 31, 2012, 12:00am PDT
A major challenge in designing MAC protocols for Wireless Sensor Networks (WSN) is the uncertainty about the traffic offered by network, which usually forces conservative assumptions leading to a...
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Whitepapers
Using Spiking Neural Networks for Light Spot Tracking
August 31, 2012, 12:00am PDT
In this paper, the authors introduces a new method for automatically compensating the light spot displacement from the normal position in laser spot trackers. The method is based on hardware...
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Whitepapers
Using Statistical Room Acoustics for Analysing the Output SNR of the MWF in Acoustic Sensor Networks
August 31, 2012, 12:00am PDT
In the context of acoustic sensor networks with spatially distributed microphones, the selection of the subset of microphones yielding the best performance is of great interest. Subset selection...
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Whitepapers
A Consensus Approach for Cooperative Communications in Cognitive Radio Networks
August 31, 2012, 12:00am PDT
In this paper, the authors investigate a decentralized Power Allocation (PA) algorithm, i.e., without the need of a fusion center, for a coalition of Bit-Interleaved Coded (BIC) OFDM-based...
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Whitepapers
A Convex Inner Approximation Technique for Rank-Two Beamforming in Multicasting Relay Networks
August 31, 2012, 12:00am PDT
In this paper, the authors propose a novel scheme for single-group multicasting using a relay network. They assume a source that transmits messages via an amplify-and-forward relay network to...
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Whitepapers
Multi-User Video Streaming Using Unequal Error Protection Network Coding in Wireless Networks
July 13, 2012, 12:00am PDT
In this paper, the authors investigate a multi-user video streaming system applying Unequal Error Protection (UEP) Network Coding (NC) for simultaneous real-time exchange of scalable video streams...
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Whitepapers
MDP-Based Handover Policy in Wireless Relay Systems
November 29, 2012, 12:00am PST
Wireless relay transmission has been considered as a supplementary technology for future wireless communication system, and handover is a key element in wireless relay transmissions to support...
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Whitepapers
On the Performance of MIMO RFID Backscattering Channels
November 29, 2012, 12:00am PST
In order to increase the reliability of data transmission, using multiple antennas in Radio Frequency IDentification (RFID) systems has been investigated by researchers, mainly through...
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Whitepapers
Reliability-Aware Iterative Detection Scheme (RAID) for Distributed IDM Space-Time Codes in Relay Systems
April 8, 2013, 12:00am PDT
In this paper, distributed Interleave-Division Multiplexing Space-Time Codes (dIDM-STCs) are applied for multi-user two-hop Decode-and-Forward (DF) relay networks. In case of decoding errors at...
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Whitepapers
Evaluation of H.264/AVC Over IEEE 802.11p Vehicular Networks
April 11, 2013, 12:00am PDT
The capacity of vehicular networks to offer non-safety services, like infotainment applications or the exchange of multimedia information between vehicles, have attracted a great deal of attention...
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Whitepapers
Low-Mobility Channel Tracking for MIMO-OFDM Communication Systems
April 15, 2013, 12:00am PDT
It is now well understood that by exploiting the available additional spatial dimensions, Multiple-Input Multiple-Output (MIMO) communication systems provide capacity gains, compared to a...
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Whitepapers
Weighted Sum-Rate Maximization for Multi-User SIMO Multiple Access Channels in Cognitive Radio Networks
April 17, 2013, 12:00am PDT
In this paper, an efficient distributed and parallel algorithm is proposed to maximize the sum-rate and optimize the input distribution policy for the Multi-User Single Input Multiple Output...
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Whitepapers
Multiple Target Three-Dimensional Coordinate Estimation for Bistatic MIMO Radar With Uniform Linear Receive Array
April 17, 2013, 12:00am PDT
A novel scheme to achieve Three-Dimensional (3D) target location in bistatic radar systems is evaluated. The proposed scheme develops the additional information of the bistatic radar, that is the...
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Whitepapers
A Distributed Approach to Precoder Selection Using Factor Graphs for Wireless Communication Networks
April 19, 2013, 12:00am PDT
In this paper, the authors address distributed parameter coordination methods for wireless communication systems. This proposes a method based on a message-passing algorithm, namely min-sum...
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Whitepapers
Capacity Analysis of Threshold-Based SNR Scheduler in LTE Systems
April 22, 2013, 12:00am PDT
In this paper, the authors present the capacity analysis of a threshold-based SNR scheduler in the Long-Term Evolution (LTE) cellular systems. LTE standard has adopted multiuser OFDMA, and...
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Whitepapers
Performance of Distributed Beamforming for Dense Relay Deployments in the Presence of Limited Feedback Information
April 26, 2013, 12:00am PDT
In this paper, the authors study the impact of quantized channel feedback on the performance of a (coherent) Distributed Beam-Forming (DBF) scheme. The analysis is done in the context of a...
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Whitepapers
Interference Coordination of Heterogeneous LTE Systems Using Remote Radio Heads
April 26, 2013, 12:00am PDT
In this paper, the authors present an operational strategy to mitigate Co-Channel Interference (CCI) by using geographically distributed Remote Radio Heads (RRHs). The inter-node CCI becomes a...
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Whitepapers
Secure Relay Selection Based on Learning With Negative Externality in Wireless Networks
April 26, 2013, 12:00am PDT
In this paper, the authors formulate relay selection into a Chinese restaurant game. A secure relay selection strategy is proposed for a wireless network, where multiple source nodes send messages...
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Whitepapers
BER Analysis of TDD Downlink Multiuser MIMO Systems with Imperfect Channel State Information
February 1, 2012, 12:00am PST
In downlink multiuser Multiple-Input Multiple-Output (MU-MIMO) systems, the Zero-Forcing (ZF) transmission is a simple and effective technique for separating users and data streams of each user at...
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Whitepapers
Joint DOD/DOA Estimation in MIMO Radar Exploiting Time-Frequency Signal Representations
May 8, 2012, 12:00am PDT
In this paper, the authors consider the joint estimation of Direction-Of-Departure (DOD) and Direction-Of-Arrival (DOA) information of maneuvering targets in a bistatic Multiple-Input...
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Whitepapers
Performance Analysis of OFDM Modulation on Indoor Broadband PLC Channels
September 27, 2011, 12:00am PDT
Indoor broadband power-line communications is a suitable technology for home networking applications. In this context, Orthogonal Frequency-Division Multiplexing (OFDM) is the most widespread...
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Whitepapers
Optimal MSE Solution for a Decision Feedback Equalizer
August 16, 2012, 12:00am PDT
Due to the inherent feedback in a Decision Feedback Equalizer (DFE) the Minimum Mean Square Error (MMSE) or Wiener solution is not known exactly. In this paper, the authors theoretically analyze a...
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Whitepapers
Impulsive Noise Modelling and Prediction of Its Impact on the Performance of WLAN Receiver
August 28, 2009, 12:00am PDT
Deployment of wireless communications equipment in electricity substation for monitoring, control and surveillance applications offers significant potential benefits over wired communications in...
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Whitepapers
Characteristics of Impulsive Noise in Electricity Substations
August 28, 2009, 12:00am PDT
Impulsive noise has the potential to degrade the performance and reliability of wireless communications systems. Such noise, which is especially prevalent in high-voltage electricity substations,...
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Whitepapers
Time-Constrained Detection Probability and Sensing Parameter Optimization in Cognitive Radio Networks
January 21, 2013, 12:00am PST
Sensing-throughput trade off has widely been investigated in cognitive radio networks. Detection probability and interference ratio are usually considered the main constraints to the protection of...
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Whitepapers
On the Achievable Rates of Symmetric Gaussian Multi-Way Relay Channels
January 22, 2013, 12:00am PST
Considering a symmetric Gaussian Multi-Way Relay Channel (MWRC) with K users, this paper compares two transmission strategies, namely One-Way Relaying (OWR) and Multi-Way Relaying (MWR), in terms...
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Whitepapers
MIMO Precoding and Mode Adaptation in Femtocellular Systems
January 23, 2013, 12:00am PST
Hierarchical femtocellular architectures have become popular recently because of their potential to provide increased coverage and capacity in cellular systems. However, introduction of femtocells...
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Whitepapers
Forecasting the Next Handoff for Users Moving With the Random Waypoint Mobility Model
January 25, 2013, 12:00am PST
Users in a cellular network can move while their connections are handed off to different access points. Studies prove that the mobility pattern followed have a strong impact on performance metrics...
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Whitepapers
Performance of the Modulation Diversity Technique for Kappa-Mu Fading Channels
January 29, 2013, 12:00am PST
The performance of wireless communication systems can be significantly improved using the modulation diversity technique, which is based on the combination of a suitable choice of the reference...
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Whitepapers
Efficient Detection and Decoding of Q-Ary LDPC Coded Signals Over Partial Response Channels
January 30, 2013, 12:00am PST
In this paper, the authors consider the ways for concatenating the Inter Symbol Interference (ISI) detector with a qary Low-Density Parity-Check (LDPC) decoder for transmissions over Partial...
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Whitepapers
Analysis of an Offset Modulation Transmission
January 30, 2013, 12:00am PST
In this paper, a method called Offset Modulation (OM-OFDM) is proposed to control the Peak-to Average Power Ratio (PAPR) of an Orthogonal Frequency Division Multiplexing (OFDM) signal. The...
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Whitepapers
A Simple Approach to Evaluate the Ergodic Capacity and Outage Probability of Correlated Rayleigh Diversity Channels With Unequal Signal-to-Noise Ratios
January 30, 2013, 12:00am PST
In this paper, the authors propose a novel method to derive exact closed-form ergodic capacity and outage probability expressions for correlated Rayleigh fading channels with receive diversity....
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Whitepapers
Special Issue on Green Radio
January 30, 2013, 12:00am PST
Society has grown increasingly aware of the need to reduce CO2 emissions in order to mitigate consequential environmental effects. The primary contributors to CO2 emissions are electric power...
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Whitepapers
Rate Improvements and Power Saving With a Hybrid Filtered Multitone Scheme
February 4, 2013, 12:00am PST
This paper presents a hybrid adaptive multi-carrier architecture that, according to the channel condition, wisely switches between Orthogonal Frequency Division Multiplexing (OFDM) and orthogonal...
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Whitepapers
Delay Tolerant Firework Routing: A Geographic Routing Protocol for Wireless Delay Tolerant Networks
February 7, 2013, 12:00am PST
The authors present the Delay Tolerant Firework Routing (DTFR) protocol, a protocol designed for use in disconnected delay tolerant networks that consist of a very large number of location-aware,...
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Whitepapers
Impact of Partial Relay Selection on the Capacity of Communications Systems with Outdated CSI and Adaptive Transmission Techniques
February 8, 2013, 12:00am PST
The impact of outdated Channel State Information (CSI) on the capacity of Amplify-and-Forward (AF) partial relay selection systems is studied in this paper. The closed-form expressions for the...
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Whitepapers
Advanced Technologies for LTE Advanced
February 8, 2013, 12:00am PST
With the explosive growth in mobile data traffic fueled by smartphones and mobile applications, transition from the 3rd Generation (3G) toward 4th generation (4G) cellular networks is progressing...
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Whitepapers
I3S: Intelligent Spectrum Sensing Scheme for Cognitive Radio Networks
February 11, 2013, 12:00am PST
Reliable spectrum sensing is one of the most crucial aspects for the successful deployment of Cognitive Radio (CR) technology. For CR, it is not possible to transmit on a licensed band and sense...
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Whitepapers
Mobility Robustness Optimization in Self-Organizing LTE Femtocell Networks
February 12, 2013, 12:00am PST
Femtocell is a promising solution for enhancing the indoor coverage and capacity in wireless networks. However, for the small size of femtocell and potentially frequent power on/off, existing...
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Whitepapers
Hello Scheme for Vehicular Ad Hoc Networks: Analysis and Design
February 12, 2013, 12:00am PST
In Vehicular Ad hoc NETworks (VANETs), essentially the information of one-hop neighbors is important for data delivery. In a general way, each node broadcasts short packets, i.e., hello packets,...
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Whitepapers
Active Interference Cancellation-Aided QoS-Aware Distributed ARQ for Cognitive Radios With Heterogeneous Traffics
February 13, 2013, 12:00am PST
Relay-assisted Automatic Repeat reQuest (ARQ), which allows the relays instead of the source to carry out retransmissions of packets erroneously received at the destination, is an efficient...
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Whitepapers
A Novel Distributed Power Allocation Scheme for Coordinated Multicell Systems
February 13, 2013, 12:00am PST
Coordination between Base Stations (BSs) is a promising solution for cellular wireless systems to mitigate intercell interference, improving system fairness, and increasing capacity in the years...
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Whitepapers
Power and Rate Allocation for Video Conferencing in Cellular Networks
February 13, 2013, 12:00am PST
The author consider resource allocation for semi-elastic applications such as video conferencing. They propose to model user utility as a sigmoid function of the average bit rate over multiple...
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Whitepapers
Simulation of Impulse Response for Indoor Visible Light Communications Using 3D CAD Models
January 12, 2013, 12:00am PST
In this paper, a tool for simulating the channel impulse response for indoor visible light communications using 3D Computer-Aided Design (CAD) models is presented. The simulation tool is based on...
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Whitepapers
Automated Uplink Power Control Optimization in LTE-Advanced Relay Networks
January 12, 2013, 12:00am PST
Relaying is standardized in 3rd Generation Partnership Project (3GPP) Long-Term Evolution (LTE)-Advanced Release 10 as a promising cost-efficient enhancement to existing radio access networks....
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Whitepapers
Intelligent Context-Aware Energy Management Using the Incremental Simultaneous Method in Future Wireless Sensor Networks and Computing Systems
January 12, 2013, 12:00am PST
In this paper, the authors present an intelligent context-aware energy management for saving home energy consumption using activities of daily living. In order to extract energy-consuming...
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Whitepapers
Fast Cell Selection With Efficient Active Set Management in OFDMA Networks With Femtocells
December 11, 2012, 12:00am PST
In 4G wireless networks, only hard handover is defined to support users' mobility. However, dense deployment of femtocells leads to significant rise in amount of initiated handovers. Thus,...
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Whitepapers
Optimum Sampling in Spatial-Temporally Correlated Wireless Sensor Networks
January 4, 2013, 12:00am PST
The optimum sampling in the one- and two-dimensional (1-D and 2-D) Wireless Sensor Networks (WSNs) with spatial-temporally correlated data is studied in this paper. The impacts of the node density...
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