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首页> 外文会议>IEEE International Conference on Acoustics, Speech and Signal Processing >DOA Estimation in Systems with Nonlinearities for MMWAVE Communications
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DOA Estimation in Systems with Nonlinearities for MMWAVE Communications

机译：MMWAVE通信的非线性系统中的DOA估计

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摘要

Accurate and efficient methods for Direction of Arrival (DOA) estimation play an important role in mmWave channel estimation methods. This estimation procedure can potentially be affected by the different RF and analog components in the communication system. Such components add an unknown, nonlinear distortion to the received signal. We address the DOA estimation problem for a general nonlinear distortion of the received signal. Two different angle recovery scenarios are considered: with and without the use of pilot symbols. The analysis focuses on the transformation of the signal subspace, resulting from the communication system nonlinearities. We prove that under certain conditions on the nonlinearity, the signal subspace is preserved. The derived result implies that the angles can be recovered without calibrating or inverting the nonlinearity.
机译：准确有效的到达方向（DOA）估计方法在mmWave信道估计方法中起着重要作用。该估计过程可能会受到通信系统中不同的RF和模拟组件的影响。这样的分量会给接收信号增加未知的非线性失真。我们针对接收信号的一般非线性失真解决DOA估计问题。考虑了两种不同的角度恢复方案：使用和不使用导频符号。分析着重于由于通信系统非线性而导致的信号子空间的变换。我们证明在非线性的某些条件下，信号子空间得以保留。得出的结果表明，无需校正或反转非线性即可恢复角度。

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