On Performance of Space-Time Eigenbeam Coding

For downlink transmission channels in which fading is correlated at the transmitter but independent at the receiver, array and diversity gains can be attained simultaneously by use of Space-Time Eigenbeam Coding (STEBC) which combines eigenbeamforming and Space-Time Coding. STEBC can greatly reduce the complexity of the system and improve the performance as well. This paper is devoted to the evaluation of the performance of STEBC theoretically. The upper-bound of the average Pair Error Probability is utilized to measure the performance of STEBC. It shows that STEBC can achieve the maximum diversity gain and is especially suitable for the wireless environments with many paths around the transmitter which concentrate in several directions.