Performance of a base station feedback-type adaptive array antenna with mobile station diversity reception

In the cellular mobile communication systems, co-channel interference and Rayleigh fading degrade the transmission performance. Adaptive array antennas (AAA) can suppress interference and, at the same time, can cope with multipath fading by using wide antenna spacing resulting in low correlation of received signals in each antenna element. A feedback-type AAA was proposed for frequency division duplexed (FDD) systems, where the mobile station measures channel characteristics and feed-backs them to the base station. In this paper, we extend the system by introducing 2-branch diversity reception at a mobile station; we assume a realistic propagation model and study the influence of antenna element spacing and control delay time on bit error rate performance.