Open Access

Space-Time Trellis Coded 8PSK Schemes for Rapid Rayleigh Fading Channels

EURASIP Journal on Advances in Signal Processing20022002:476818

DOI: 10.1155/S1110865702203042

Received: 29 May 2001

Published: 30 May 2002

Abstract

This paper presents the design of 8PSK space-time (ST) trellis codes suitable for rapid fading channels. The proposed codes utilize the design criteria of ST codes over rapid fading channels. Two different approaches have been used. The first approach maximizes the symbol-wise Hamming distance (HD) between signals leaving from or entering to the same encoder′s state. In the second approach, set partitioning based on maximizing the sum of squared Euclidean distances (SSED) between the ST signals is performed; then, the branch-wise HD is maximized. The proposed codes were simulated over independent and correlated Rayleigh fading channels. Coding gains up to 4 dB have been observed over other ST trellis codes of the same complexity.

Keywords

diversity multiple transmit antennas space-time codes Rayleigh fading channels

Authors’ Affiliations

(1)
Electrical Engineering and Computer Science Department, University of Michigan
(2)
Electrical Engineering Department, King Fahd University of Petroleum and Minerals

Copyright

© Zummo and Al-Semari 2002