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Distance spectrum analysis of space-time trellis-coded Modulations in quasi-static Rayleigh-fading channels

机译:准静态瑞利衰落信道中时空网格编码调制的距离谱分析

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摘要

In this correspondence, we propose an algorithm for computing the distance spectrum of a space-time trellis code achieving maximal diversity gain in quasi-static fading channels. We further present a state reduction technique for trellis codes that can reduce the complexity of the distance spectrum computation. We provide numerical results supporting the empirical evidence that a truncated union bound obtained from the distance spectrum provides an accurate characterization of the relative performance ordering of different space-time trellis codes and, therefore, it offers a tool for better space-time trellis code design.
机译:在这种对应关系中,我们提出了一种算法,用于计算在准静态衰落信道中实现最大分集增益的时空网格码的距离谱。我们进一步提出了一种用于格码的状态缩减技术,该技术可以降低距离谱计算的复杂度。我们提供的数值结果支持以下经验证据:从距离谱获得的截断联合边界可准确表征不同时空网格代码的相对性能顺序,因此,它提供了一种更好的时空网格代码设计工具。

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