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Proceedings Paper

Space-time processing for OFDM using complementary Golay sequences
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Paper Abstract

In this paper, a new method of space-time processing is proposed for Orthogonal Frequency Division Multiplexing (OFDM) using complementary pairs of Golay sequences. Space-time processing with complementary Golay sequences provides diversity at the transmitter which in turn helps improve performance in multipath fading channels without the need for channel knowledge at the transmitter. The autocorrelative properties of complementary Golay pairs allows multiple data signals at the transmitter to be perfectly separated at the receiver. Further, these properties significantly boost the signal energy at the receiver, leading to a higher SNR and thus better bit error performance. Building on work done in the field of orthogonal space-time block codes, the new Golay method is proposed and derived for both a 2×1 and 2×2 MIMO-OFDM system with a channel exhibiting Rayleigh fading; at the receiver, symbol estimation is effected via minimum mean-square estimation (MMSE).

Paper Details

Date Published: 1 May 2009
PDF: 10 pages
Proc. SPIE 7349, Wireless Sensing and Processing IV, 734904 (1 May 2009); doi: 10.1117/12.819062
Show Author Affiliations
Chad C. Lau, Purdue Univ. (United States)
Muthanna Al-Mahmoud, Purdue Univ. (United States)
Michael D. Zoltowski, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 7349:
Wireless Sensing and Processing IV
Sohail A. Dianat; Michael D. Zoltowski, Editor(s)

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