Wigner-ville distribution MVDR beamforming scheme for interference-tolerant cognitive radio network

Munyaradzi Munochiveyi, Xiaohui Zhao, J. Mudare
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引用次数: 1

Abstract

Interference-tolerant cognitive radio (CR) networks are emerging as a long-term solution to CR spectrum-sharing between licensed primary users (PUs) and unlicensed secondary users (SUs). Moreover, the networks allow PUs and SUs to coexist in so far as the interference at PU receivers is below an acceptable threshold defined as interference temperature. In this paper, we consider the design of a robust nonstationary minimum-variance distortionless response (MVDR) beamformer. The beamformer is employed in a simple CR network, comprised of a fixed base station with multiple antennas and a mobile CR user (mCRU) with a single antenna, as an interference management technique. The beamformer which is located at the base station determines the direction-of-arrival (DOA) of uplink time-reversal communication from the mCRU to the base station. The performance of the proposed robust nonstationary MVDR beamformer is demonstrated via simulation studies.
抗干扰认知无线电网络Wigner-ville分布MVDR波束形成方案
容忍干扰的认知无线电(CR)网络作为一种长期的解决方案出现在许可的主用户(pu)和未许可的辅助用户(su)之间。此外,网络允许PU和su共存,只要PU接收器的干扰低于定义为干扰温度的可接受阈值。本文研究了一种鲁棒非平稳最小方差无失真响应波束形成器的设计。波束形成器用于由多天线固定基站和单天线移动CR用户(mCRU)组成的简单CR网络中,作为干扰管理技术。位于基站的波束形成器确定从mCRU到基站的上行时间反转通信的到达方向(DOA)。通过仿真研究验证了所提出的鲁棒非平稳MVDR波束形成器的性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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