Sciweavers

TCOM
2010
162views more  TCOM 2010»
13 years 2 months ago
Power Allocation in MMSE Relaying over Frequency-Selective Rayleigh Fading Channels
Abstract--This paper develops an amplify-and-forward relaying scheme for multiuser wireless cooperative networks under frequency-selective block-fading. Single-carrier frequency di...
Tung T. Pham, Ha H. Nguyen, Hoang Duong Tuan
TCOM
2010
141views more  TCOM 2010»
13 years 2 months ago
Mutual Information Statistics and Beamforming Performance Analysis of Optimized LoS MIMO Systems
Abstract--This paper provides a systematic mutual information (MI) and multichannel beamforming (MBF) characterization of optimized multiple-input multiple-output (MIMO) communicat...
Michail Matthaiou, Paul de Kerret, George K. Karag...
TCOM
2010
147views more  TCOM 2010»
13 years 2 months ago
On a Ratio of Functions of Exponential Random Variables and Some Applications
Consider independent and identically distributed exponential random variables (r.vs) 1, 2, . . . , and positive scalars 1, 2, . . . , . In this letter, we present the probability...
Ramesh Annavajjala, Ananthanarayanan Chockalingam,...
TCOM
2010
114views more  TCOM 2010»
13 years 2 months ago
Concentric Permutation Source Codes
Permutation codes are a class of structured vector quantizers with a computationally-simple encoding procedure based on sorting the scalar components. Using a codebook comprising s...
Ha Q. Nguyen, Lav R. Varshney, Vivek K. Goyal
TCOM
2010
195views more  TCOM 2010»
13 years 2 months ago
Coherent and Differential Space-Time Shift Keying: A Dispersion Matrix Approach
Abstract--Motivated by the recent concept of Spatial Modulation (SM), we propose a novel Space-Time Shift Keying (STSK) modulation scheme for Multiple-Input Multiple-Output (MIMO) ...
Shinya Sugiura, Sheng Chen, Lajos Hanzo
TCOM
2010
79views more  TCOM 2010»
13 years 2 months ago
Power Correlation Coefficient of a Very General Fading Model in Maximal Ratio Combining
A very general fading scenario is considered for which exact, closed-form formulas for the correlation coefficient of the instantaneous power at the output of a Maximal Ratio Combi...
José Ricardo Mendes, Michel Daoud Yacoub, U...
TCOM
2010
65views more  TCOM 2010»
13 years 2 months ago
Max-matching diversity in OFDMA systems
Abstract--This paper considers the problem of optimal subcarrier allocation in OFDMA systems to achieve the minimum outage probability while guaranteeing fairness. The optimal subc...
Bo Bai, Wei Chen, Zhigang Cao, Khaled Ben Letaief
TCOM
2010
101views more  TCOM 2010»
13 years 2 months ago
Spectral efficient transmit diversity techniques without cyclic prefix for fading relay channels
Abstract--This paper proposes spectral efficient relayassisted transmit diversity techniques, i.e., space-time and space-frequency block codes (STBC/SFBC), for single carrier frequ...
Ui-Kun Kwon, Dae-Young Seol, Gi-Hong Im
TCOM
2010
83views more  TCOM 2010»
13 years 2 months ago
Global and Fast Receiver Antenna Selection for MIMO Systems
Abstract--For a multiple-input multiple-output (MIMO) system with more antennas at the receiver than the transmitter, selecting the same number of receiver antennas as the number o...
Bu Hong Wang, Hon Tat Hui, Mook Seng Leong
TCOM
2010
142views more  TCOM 2010»
13 years 2 months ago
Performance Bounds and Distance Spectra of Variable Length Codes in Turbo/Concatenated Systems
Abstract--Variable length codes (VLCs), used in data compression, are very sensitive to error propagation in the presence of noisy channels. Addressing this problem with joint sour...
Xavier Jaspar, Luc Vandendorpe