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CORR
2011
Springer
177views Education» more  CORR 2011»
8 years 3 months ago
Downlink SDMA with Limited Feedback in Interference-Limited Wireless Networks
The tremendous capacity gains promised by space division multiple access (SDMA) depend critically on the accuracy of the transmit channel state information. In the broadcast chann...
Marios Kountouris, Jeffrey G. Andrews
VTC
2010
IEEE
158views Communications» more  VTC 2010»
8 years 10 months ago
Joint Channel Impulse Response and Noise-Variance Estimation for OFDM/SDMA Systems Based on Expectation Maximization
Abstract—A joint channel impulse response (CIR) and noisevariance estimation scheme is proposed for multi-user MultipleInput-Multiple-Output (MIMO) Orthogonal Frequency-Division ...
Jiankang Zhang, Xiaomin Mu, Lajos Hanzo
VTC
2006
IEEE
9 years 5 months ago
Reduced-Complexity Maximum-Likelihood Detection in Downlink SDMA Systems
— The literature of up-link SDMA systems is rich, but at the time of writing there is a paucity of information on the employment of SDMA techniques in the down-link. Hence, in th...
Jos Akhtman, Chun-Yi Wei, Lajos Hanzo
ICC
2007
IEEE
197views Communications» more  ICC 2007»
9 years 6 months ago
A Distributed Scheduling Algorithm for Multiuser MIMO Systems with 1-bit SINR Feedback
—Opportunistic scheduling in random beamforming maximizes the sum-rate by allocating resources to the users with the best channel condition, thus leveraging on multiuser diversit...
Stefano Sorrentino, Umberto Spagnolini, Lino Moret...
ICC
2007
IEEE
119views Communications» more  ICC 2007»
9 years 6 months ago
A Convex Quadratic SDMA Grouping Algorithm Based on Spatial Correlation
Abstract— Space Division Multiple Access (SDMA) is a promising solution to improve the spectral efficiency of future mobile radio systems. However, finding the group of MSs tha...
Tarcisio F. Maciel, Anja Klein
CNSR
2007
IEEE
102views Communications» more  CNSR 2007»
9 years 6 months ago
On Interference in Uplink SDMA SC-FDE system
In this paper, the issue of channel estimation with multiple In-Cell co-channel Users (ICUs) in the presence of Out of Cell Interferers (OCIs) is addressed. A Single Carrier Frequ...
Fayyaz Siddiqui, Florence Danilo-Lemoine, David D....
GLOBECOM
2008
IEEE
9 years 6 months ago
A Distributed Multi-User MIMO MAC Protocol for Wireless Local Area Networks
— Multi-user multiple-input multiple-output (MIMO) systems have been emerging and attracting considerable attention recently for its potential to substantially improve system cap...
Lin X. Cai, Hangguan Shan, Weihua Zhuang, Xuemin S...
ICC
2009
IEEE
160views Communications» more  ICC 2009»
9 years 6 months ago
Application of Phase Shift in Coherent Multi-Relay MIMO Communications
—In this paper we propose a new low feedback and low complexity scheme that adjusts the phases at the relays, thus allowing for the coherent combining of signals from multiple re...
Yi Zheng, Hani Mehrpouyan, Steven D. Blostein
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