关键词: 信道容量, 多天线系统, 随机选择天线, 信息选择天线

Abstract: This paper dealt with the capacity behavior of a new transmission technique for the multi-antenna system,which was proposed based on the fact that multiple independent channels as well as the points in modulation constellation can be mapped by the input of information data.An analytic expression of the channel capacity for the new transmission technique was derived and the numerical results proved that compared to the traditional random transmit-antenna selection technique with the same antenna structure,the new transmission technique can achieve more channel capacity gain.

Key words: capacity, ergodic capacity, multiple antenna system, transmit-antenna selection