Adaptive sphere decoding for space-time codes of wireless MIMO communications

Xinjia Chen; Ernest Walker

doi:10.1117/12.852501

28 April 2010 Adaptive sphere decoding for space-time codes of wireless MIMO communications

Xinjia Chen, Ernest Walker

Proceedings Volume 7706, Wireless Sensing, Localization, and Processing V; 77060N (2010) https://doi.org/10.1117/12.852501
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

In this paper, we develop an adaptive sphere decoding technique for space-time coding of wireless MIMO communications. This technique makes use of the statistics of previous decoding results to reduce the decoding complexity of subsequent decoding process. Specially, we propose a method for the determination of the initial sphere radius for the decoding process of future time-frame based on a queue of records of minimum sphere radius obtained from the decoding process of previous time-frames. Concrete methods have been derived for the choice of appropriate queue sizes. Numerical experiment is performed for demonstrating the efficiency of the adaptive technique.

Citation Download Citation

Xinjia Chen and Ernest Walker "Adaptive sphere decoding for space-time codes of wireless MIMO communications", Proc. SPIE 7706, Wireless Sensing, Localization, and Processing V, 77060N (28 April 2010); https://doi.org/10.1117/12.852501

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