Noncoherent versus coherent MIMO radar: Performance and simplicity analysis
Noncoherent versus coherent MIMO radar: Performance and simplicity analysis
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非相干与相干 MIMO 雷达：性能和简单性分析
DOI：
10.1016/j.sigpro.2012.03.008
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发表时间：
2012-10-01
影响因子：
4.4
通讯作者：
Blum, Rick S.
中科院分区：
文献类型：
--
作者：
He, Qian;Blum, Rick S.
最近的研究表明，具有正确放置天线并采用相干处理方法的 MIMO 雷达可以提供卓越的 MSE 性能。本文证明，如果非相干系统的天线也被适当放置（使用通常与相干处理方法不同的放置方式），则这些增益的幅度会随着发射和接收天线数量的乘积的增加而减小。最初，我们在不限制复杂性和能量的情况下研究系统，其中每个添加的发射天线都采用固定的能量，以便随着我们增加发射天线的数量，总发射能量可以增加。后来我们还研究了受限系统，其中添加发射天线会分割系统总能量，并且所使用的天线总数受到限制。针对时间和空间白色杂波加噪声中的正交信号的情况提出了严格的定理，但非正交信号和彩色杂波加噪声的数值结果遵循类似的模式。 (C) 2012 Elsevier B.V. 保留所有权利。
MIMO radar with properly placed antennas that employs a coherent processing approach can provide superior MSE performance, as indicated by recent work. This paper demonstrates that the magnitude of these gains decreases with an increase in the product of the number of transmit and receive antennas if the antennas for the noncoherent system are also suitably placed, using a placement which is generally different from the one for the coherent processing approach. Initially, we study the systems without constraining the complexity and energy, where each added transmit antenna employs a fixed energy so that the total transmitted energy is allowed to increase as we increase the number of transmit antennas. Later we also look at constrained systems, where adding a transmit antenna splits the total system energy and the total number of antennas employed is restricted. A rigorous theorem is presented for the case of orthogonal signals in temporally and spatially white clutter-plus-noise, but numerical results for nonorthogonal signals and colored clutter-plus-noise follow a similar pattern. (C) 2012 Elsevier B.V. All rights reserved.