Sciweavers

VTC
2008
IEEE
14 years 6 months ago
Construction of Regular Quasi-Cyclic Protograph LDPC codes based on Vandermonde Matrices
Abstract— In this contribution, we investigate the attainable performance of quasi-cyclic (QC) protograph Low-Density Parity-Check (LDPC) codes for transmission over both Additiv...
Nicholas Bonello, Sheng Chen, Lajos Hanzo
VTC
2008
IEEE
140views Communications» more  VTC 2008»
14 years 6 months ago
Diversity Combining of Signals with Different Modulation Levels in Cooperative Relay Networks
In digital cooperative relaying, signals from the source-destination and relay-destination links are combined at the destination to achieve spatial diversity. These signals do not ...
Akram Bin Sediq, Halim Yanikomeroglu
VTC
2008
IEEE
160views Communications» more  VTC 2008»
14 years 6 months ago
Reducing Feedback Requirements of the Multiple Weight Opportunistic Beamforming Scheme via Selective Multiuser Diversity
—Opportunistic beamforming (OB) relies on the transmission of Channel State Information (CSI) in the form of instantaneous Signal to Noise Ratio (SNR) from Mobile Stations (MSs) ...
Marios Nicolaou, Angela Doufexi, Simon Armour
VTC
2008
IEEE
14 years 6 months ago
On the Capacity of Generalized Fading/Shadowing Channels
Abstract—In this paper the Shannon capacity of generalizedgamma (GG) fading channels is studied, under different adaptive transmission techniques. The GG is a generic distributio...
Petros S. Bithas, P. Takis Mathiopoulos, Stavros A...
VTC
2008
IEEE
14 years 6 months ago
Optimizing Adaptive Transmission Policies for Wireless Vehicular Communications
—The adoption of wireless vehicular communication technologies would strongly depend on the technologies transmission reliability, required by QoS demanding traffic safety applic...
Miguel Sepulcre, Javier Gozálvez
VTC
2008
IEEE
129views Communications» more  VTC 2008»
14 years 6 months ago
Cooperative Communication in Space-Time-Frequency Coded MB-OFDM UWB
Abstract— Though cooperative communication has been intensively examined for general wireless systems, such as mobile and ad-hoc networks, it has been almost unexplored in the ca...
Le Chung Tran, Alfred Mertins, Tadeusz A. Wysocki
VTC
2008
IEEE
186views Communications» more  VTC 2008»
14 years 6 months ago
Downlink Limited Feedback Transmission Schemes for Asymmetric MIMO Channels
Abstract—In multiple-input multiple-output (MIMO) broadcast channels, multiuser diversity is exploited by scheduling data transmission to users with best channel conditions. To ï...
Mohsen Eslami, Witold A. Krzymien
VTC
2008
IEEE
14 years 6 months ago
Resource Allocation and Control Signaling in the WINNER Flexible MAC Concept
—The EU WINNER projects have studied OFDM-based packet data systems beyond 3G that use adaptivity on all timescales to obtain high flexibility and performance. The adaptive trans...
Mikael Sternad, Tommy Svensson, Martin Döttli...
VTC
2008
IEEE
107views Communications» more  VTC 2008»
14 years 6 months ago
TOA Estimation Enhancement based on Blind Calibration of Synthetic Arrays
—The accuracy of Time of Arrival (TOA) measurements is significantly compromised due to the multipath components which coexist with the desired Line of Sight (LOS) components in ...
Ali Broumandan, John Nielsen, Gérard Lachap...
VTC
2008
IEEE
110views Communications» more  VTC 2008»
14 years 6 months ago
FFT Sign Search with Secondary Code Constraints for GNSS Signal Acquisition
— New GNSS signals are usually characterized by the presence of secondary codes and high data rates that can make the sign of the transmitted signal change each primary code peri...
Daniele Borio