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ThinkMind // ICWMC 2011, The Seventh International Conference on Wireless and Mobile Communications // View article icwmc_2011_4_20_20172


Simple Detection Schemes for the Alamouti Code Assisted V-BLAST (ACAV) System

Authors:
David Wee-Gin Lim

Keywords: Hybrid transmission scheme; ACAV; STBC-VBLAST; MIMO detector; MIMO detection scheme

Abstract:
The Alamouti Code Assisted V-BLAST (ACAV) is a promising hybrid MIMO transmission scheme that is adopted by IEEE 802.11n-2009 (WiFi) recently. It combines spatial multiplexing (SM) and Alamouti space-time block codes (STBC) so that if the Alamouti symbols were detected first, which are generally more reliable due to STBC, subsequent interference cancelation (IC) stages will suffer less from error propagation. The optimal IC detector for the ACAV can be undesirably complex but we found a procedure to reduce the complexity and processing time without compromising its optimality. We further developed a simpler suboptimal detector that is suitable for rapidly varying channels. Simulation results show both ACAV detectors can outperform the detectors of pure SM scheme of the same data rate.

Pages: 75 to 80

Copyright: Copyright (c) IARIA, 2011

Publication date: June 19, 2011

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-61208-140-3

Location: Luxembourg City, Luxembourg

Dates: from June 19, 2011 to June 24, 2011

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