Antenna selection for space-time block coded systems with imperfect channel knowledge.

摘要

Multiple-input multiple-output (MIMO) wireless communication systems promise a higher data rate to meet the demand of future wireless applications. However multiple expensive RF chains, that include power amplifiers, are required at both the basestation and subscriber unit. The system complexity also increases significantly as the number of signal dimensions increase. Orthogonal frequency division multiplexing (OFDM) can reduce complexity of a wide band system. The thesis investigates whether MIMO and MIMO-OFDM system complexity can be reduced by using antenna selection techniques, while maintaining good performance. This study emphasizes MIMO systems.; To date, the performance of antenna selection has not been examined under imperfect instantaneous channel knowledge with a specific channel estimation technique. In this thesis, orthogonal space-time block coded (OSTBC) MIMO antenna selection systems are investigated with maximum-likelihood (ML) and linear minimum-mean-square error (LMMSE) channel estimation techniques. (Abstract shortened by UMI.)