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| New Sub-optimal Antenna Selection for V-BLAST Systems |
| Zhang Xiao-ge; Xu Cheng-qi |
| College of Communication and Information, Nanjing University of Posts and Telecommunications, Nanjing 210003, China |
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Abstract A new antenna selection criterion for Vertical Bell Labs layered Space-Time (V-BLAST) systems based on Zero Forcing (ZF) Successive Interference Cancellation (SIC) detection, which is named minimizing the maximum row norm of the channel matrix, is proposed. Based on the greedy algorithm, incremental selection approach is used to minimize the increment of the norm step by step for transmit antenna selection, and decremental selection approach is used to maximize the decrement of the norm step by step for receive antenna selection. Simulations show the new criterion outperforms the existing so-called max-first layer criterion obviously, and the corresponding fast selection algorithm can obtain the most of the diversity benefit of the optimal exhaustive selection system based on the max-min criterion with a low complexity.
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Received: 30 June 2008
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2009, Vol. 31 
