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Impact of scattering on the capacity, diversity, and propagation range of multiple-antenna channels

机译：散射对多天线信道的容量，分集和传播范围的影响

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摘要

The impact of scattering condition and array configuration on performances are inseparable in early analyses of multiple-antenna systems. An array-independent scattering model is introduced where three basic scattering mechanisms are modeled. Performance results become more intrinsic property of the scattering channel itself. For linear arrays of length L in an environment of total angle spread |/spl Omega/|, the ergodic capacity is shown to increase linearly with L|/spl Omega/| for large arrays. When antenna arrays reduce to practical sizes, the capacity scaling depends on the signal-to-noise ratio (SNR) as well. This implies that the number of antennas used should also depend on the SNR. In terms of outage capacity, the tradeoff between spatial multiplexing gain and diversity gain is shown to be very sensitive to the underlying scattering mechanisms. Finally, as |/spl Omega/| varies with the propagation range, the tradeoff among multiplexing gain, diversity gain, and propagation range is studied.
机译：散射条件和阵列配置对性能的影响在多天线系统的早期分析中是分不开的。引入了与阵列无关的散射模型，其中对三种基本散射机制进行了建模。性能结果成为散射通道本身的更多固有属性。对于在总角度扩展| / spl Omega / |的环境中长度为L的线性阵列，遍历容量显示为随L | / spl Omega / |线性增加。适用于大型阵列。当天线阵列缩小到实际尺寸时，容量缩放也取决于信噪比（SNR）。这意味着使用的天线数量也应取决于SNR。就中断容量而言，空间复用增益和分集增益之间的折衷对底层的散射机制非常敏感。最后，作为| / spl Omega / |随着传播范围的变化，研究了复用增益，分集增益和传播范围之间的折衷。

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