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本文针对移动通信中常见的慢衰落下有效分集数有限的特点，给出了这种信道的性能理论极限的新定义，并分析了常见的高斯信号和ＭＰＳＫ信号在这种信道中的极限性能。讨论了ｔｕｒ－ｂｏ－ｃｏｄｅ应用于这种信道的方法，仿真结果表明，ｔｕｒｂｏ－ｃｏｄｅ在这种信道中可以获得接近极限的性能。
In this paper, we present a new definition of the theoretical limit of performance of this channel for the limited number of effective diversity under slow fading, which is common in mobile communications. We also analyze the limit performance of common Gaussian and MPSK signals in this channel. The method that turbo-code is applied to this channel is discussed. The simulation results show that turbo-code can achieve the performance close to the limit in this channel.