Performance analysis of MIMO-SESS with Alamouti scheme over Rayleigh fading channels

Authors

Shichuan Ma, University of Nebraska-LincolnFollow
Lim Nguyen, University of Nebraska-LincolnFollow
Yaoqing Lamar Yang, University of Nebraska-LincolnFollow
Won Mee Jang, University of Nebraska-LincolnFollow

Date of this Version

2011

Citation

Ma et al. EURASIP Journal on Wireless Communications and Networking 2011, 2011:145 http://jwcn.eurasipjournals.com/content/2011/1/145

Comments

© 2011 Ma et al; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License.

Abstract

Self-encoded spread spectrum (SESS) is a novel modulation technique that acquires its spreading sequence from the random input data stream rather than through the use of the traditional pseudo-noise code generator. It has been incorporated with multiple-input multiple-output (MIMO) systems as a means to combat fading in wireless channels. In this paper, we present the analytical study of the bit-error rate (BER) performance of MIMO-SESS systems under Rayleigh fading. The BER expressions are derived in closed form, and the veracity of the analysis is confirmed by numerical calculations that demonstrate excellent agreement with simulation results. The performance analysis shows that the effects of fading can be effectively mitigated by taking advantage of spatial and temporal diversities. For example, a 2 × 2 MIMO-SESS system can achieve about 7 dB performance improvement at 10^-4 BER over a MIMO PN-coded spread spectrum system.