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Channel Matched Space-Time Code Selection and Adaptive Modulation

Authors:
Said El-Khamy
Amr El- Helw
Sara El-Zaalik

Keywords: Space-Time Block Codes; Multiple Input Multiple Output; Channel State Information; feedback; Adaptive Modulation

Abstract:
Abstract— Space-Time Block Codes represent an exciting development in the field of wireless communication. It is a promising technique to increase the data rates with minimal decoding complexity. In this paper, we present an adaptive transmission system for Rayleigh fading Multiple Input Multiple Output channels. Code selection and adaptive modulation are combined together by two feedback scenarios. Channel State Information is sent back from the receiver to the transmitter controlling three feedback decision bits. By applying these adaptive techniques, the system adjusted its performance with the channel conditions. As a result, signal transmission with an improved coding gain and diversity near to the maximum diversity order is achieved. The proposed system has shown enhanced bit error rate performance and better outage data throughput, when compared with non adaptive systems.

Pages: 111 to 115

Copyright: Copyright (c) IARIA, 2012

Publication date: October 21, 2012

Published in: conference

ISSN: 2308-3468

ISBN: 978-1-61208-229-5

Location: Venice, Italy

Dates: from October 21, 2012 to October 26, 2012