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Proceedings Paper

Capacity for orthogonal space-time block coding in Rayleigh fading environment
Author(s): Tao Luo; Xiangming Li; Guangxin Yue
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Paper Abstract

In this paper, we present a squaring method to simplify the decoding of orthogonal space-time block codes (OSTBC) in a wireless system with arbitrary number of transmit- and receive-antennas. Using this squaring method, a closed-form expression of signal-to-noise ratio (SNR) after space-time decoding is also derived. It gives the same decoding performance as the maximum likelihood ratio decoding while it shows much lower complexity. On the basis of analyzing the received SNR of OSTBC over Rayleigh fading channel, the expression of capacity for OSTBC is also obtained in this paper. Simulation results show that the capacity increases with the increasing number of receiving antennas if the number of transmitting antennas is invariant, and also increases with the increasing number of transmitting antennas if the number of receiving antennas is constant. The capacity, however, does not increase any more when the number of transmitting antennas is large enough.

Paper Details

Date Published: 18 October 2001
PDF: 6 pages
Proc. SPIE 4586, Wireless and Mobile Communications, (18 October 2001); doi: 10.1117/12.445227
Show Author Affiliations
Tao Luo, Beijing Univ. of Posts and Telecommunications (China)
Xiangming Li, Beijing Univ. of Posts and Telecommunications (China)
Guangxin Yue, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 4586:
Wireless and Mobile Communications
Hequan Wu; Jari Vaario, Editor(s)

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