匙孔信道容量及中断概率分析

Capacity and Outage ProbabilityAnalysis of Keyhole Channels

在某些多输入多输出(MIMO)衰落环境下,虽然发射或者接收信号不相关,但是系统的信道容量依然很低,这种现象称之为匙孔(Keyhole)效应。针对匙孔衰落MIMO信道,在任意的收发天线数目下,分析了Keyhole信道容量以及中断概率。研究结果表明,匙孔信道的最大分集增益由发射或接收天线数目的最小值决定。

In some multiple input multiple output（MIMO） fading channels, though the transmitted or received signals are not correlated, the system capacity is still low, which is termed as keyhole effect. In this paper, the system capacity and outage probability are provided over keyhole fading channels for arbitrary number of transmitting and receiving antennas. The result shows that the achievable maximum diversity gain is determined by the minimum number of transmitting and receiving antennas.