Capacity and error probability analysis of space-time block codes for DS-CDMA over fading channels

Authors:
Hao Zhang;T. Aaron Gulliver
Affiliations:
Department of Electrical & Computer Engineering, University of Victoria, Canada;Department of Electrical & Computer Engineering, University of Victoria, Canada
Venue:
MILCOM'03 Proceedings of the 2003 IEEE conference on Military communications - Volume II
Year:
2003

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Abstract

The capacity and error probability of space-time block codes (STBC) are considered for a DS-CDMA system with PAM/PSK/QAM modulation in fading channels. The approach is based on an equivalent scalar AWGN (additive white Gaussian noise) channel with a channel gain proportional to the Frobenius norm of the matrix channel for the STBC Using this effective channel, capacity and probability of error expressions are derived for PSK/PAM/QAM modulation with STBC Rayleigh, Ricean and Nakagami fading channels are considered. These results are extended to obtain the capacity and probability of error for a multiuser direct sequence code division multiple access (DS-CDMA) system employing STBC.