MIMO Broadcast Communications Using Block-Diagonal Uniform Channel Decomposition (BD-UCD)

2006 ◽  
Author(s):  
Shaowei Lin ◽  
Winston L. Ho ◽  
Ying-chang Liang
Keyword(s):  
Uniform Channel ◽  
Block Diagonal ◽  
Channel Decomposition

Robust Uniform Channel Decomposition and Power Allocation for MIMO Systems with Imperfect CSI

2011 ◽  
Vol 64 (4) ◽  
pp. 761-781 ◽  
Author(s):  
Rui Chen ◽  
Jiandong Li ◽  
Wei Liu ◽  
Dan Chen ◽  
Leifang Hui
Keyword(s):  
Power Allocation ◽  
Mimo Systems ◽  
Imperfect Csi ◽  
Uniform Channel ◽  
Channel Decomposition

Research on UCD Precoding for MIMO System

2012 ◽  
Vol 459 ◽  
pp. 620-623
Author(s):  
Hong He ◽  
Tao Li ◽  
Tong Yang ◽  
Lin He
Keyword(s):  
Communication Systems ◽  
Mimo System ◽  
Geometric Mean ◽  
Multiple Input Multiple Output ◽  
Symbol Error Rate ◽  
Error Correcting Codes ◽  
Decomposition Scheme ◽  
Input Multiple Output ◽  
Uniform Channel ◽  
Channel Decomposition

This article mainly describes a new technique of multiple-input multiple-output (MIMO) communication systems based on the recent communication demand. This technique, by pre-coding CSI (the channel state information) at the transmitter, is based on UCD (Uniform Channel Decomposition) algorithm for MIMO system. By Uniform Channel decomposition of channel matrix, the algorithm can decompose a MIMO downlink channel into multiple identical sub-channels. The power allocation applied to each sub channel in MIMO system is identical, and the MIMO channel’s capacity isn’t reduce when the SNR (Signal Noise Ratio) is low. The simulations show that the UCD scheme has a better performance than GMD (Geometric Mean Decomposition) scheme even without the use of error-correcting codes, and the Symbol Error Rate (SER) of UCD algorithm is lower than GMD’s at the same SNR. Consequently, MIMO system gets a better interference performance by UCD algorithm.

Uniform channel decomposition for MIMO communications

2005 ◽  
Vol 53 (11) ◽  
pp. 4283-4294 ◽  
Author(s):  
Yi Jiang ◽  
Jian Li ◽  
W.W. Hager
Keyword(s):  
Mimo Communications ◽  
Uniform Channel ◽  
Channel Decomposition
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