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An improved complex sphere decoder for V-BLAST systems

delete2004-09-01
delete64
PRE
AI
D
Duc-Son Pham
K
Krishna R. Pattipati
W
Willett, PK
J
Jie Luo
DOI：10.1109/LSP.2004.833522delete
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Abstract

Abstract

En 中文
A new complex sphere decoding algorithm is presented for signal detection in V-BLAST systems, which has a computational cost that is significantly lower than that of the original complex sphere decoder (SD) for a wide range of SNRs. Simulation results on a 64-QAM system with 23 transmit and 23 receive antennas at an SNR per bit of 24 dB show that the new sphere decoding algorithm obtains the ML solution with an average cost that is at least 6 times lower than that of the original complex SD. Further, the new algorithm also shows robustness with respect to the initial choice of sphere radius.
Keywords:
branch and bound
complex sphere decoder
ML detection
V-BLAST

Journal

IEEE Signal Processing Magazine cover
IEEE Signal Processing Magazine
IF:
9.6
Papers:
1.1W
Citations:
1.7W

Organization

No organization information available