【摘要】 空间分集技术是抗信号衰落的主要技术之一,但空间分集不能抵消系统的同信道干扰,天线阵列的信号处理技术可以对抗同信道的干扰。本文将分集和基于MMSE的空域滤波信号处理相结合,提出一种接收机结构,用来抵消同信道的干扰,同时保留分集的体系结构。仿真结果表明:该方案可提高系统的性能。作为对比,同时给出了最大比合并的分集接收机的性能。更多还原

【Abstract】 Space diversity is one of well-known techniques for combating signal fading, however,which can’t mitigate cochannel interference. The antenna array method based on the minimum mean-square error (MMSE) is quite effective to mitigate cochannel interference (CCI).The receiver structure that combines space diversity and antenna array processing is considered. The proposed receiver can suppress cochannel interferences while preserving the diversity advantage. The simulations results state that the proposed scheme is effective to reject the cochannel interference, and the performance of system can be improved. Also,diversity combining with maximum ratio are also provided as comparisons.更多还原