A simplified fixed-complexity sphere decoder for V-BLAST systems

A simplified fixed-complexity sphere decoder (SFSD) with much lower computational cost than that of the original fixed-complexity sphere decoder (FSD) has been developed for signal detection in Vertical Bell Laboratories layered space-time (V-BLAST) systems. Simulation results on a 16-QAM system wit...

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Veröffentlicht in:	IEEE communications letters 2009-08, Vol.13 (8), p.582-584
Hauptverfasser:	Xiong, Cong, Zhang, Xin, Wu, Kai, Yang, Dacheng
Format:	Artikel
Sprache:	eng
Schlagworte:	Antennas Applied sciences Bells Coding, codes Computational efficiency Computational modeling Computer simulation Costs Decoders Detection, estimation, filtering, equalization, prediction Exact sciences and technology fixed-complexity Information, signal and communications theory Iron Matrix decomposition Maximum likelihood decoding Maximum likelihood detection Modulation, demodulation Receiving antennas Signal and communications theory Signal detection Signal, noise Sphere decoder (SD) Systems, networks and services of telecommunications Telecommunications Telecommunications and information theory Transmission and modulation (techniques and equipments) Transmitting antennas Vanadium vertical Bell Laboratories layered space-time (V-BLAST)
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Zusammenfassung:	A simplified fixed-complexity sphere decoder (SFSD) with much lower computational cost than that of the original fixed-complexity sphere decoder (FSD) has been developed for signal detection in Vertical Bell Laboratories layered space-time (V-BLAST) systems. Simulation results on a 16-QAM system with 8 transmit and 8 receive antennas show that the SFSD can attain the near-optimal performance with a cost that is about 37% of the counterpart of the original FSD.
ISSN:	1089-7798 1558-2558
DOI:	10.1109/LCOMM.2009.091039