Robust adaptive beamforming algorithm for coherent signals based on virtual array

IF 1.8 4区 计算机科学 Q3 TELECOMMUNICATIONS Annals of Telecommunications Pub Date : 2023-06-12 DOI:10.1007/s12243-023-00966-7
Yuxi Du, Weijia Cui, Fengtong Mei, Chunxiao Jian, Bin Ba
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Abstract

Aiming at the problem of beamforming performance degradation under the coherent signals model, this paper proposes an adaptive beamforming algorithm based on the virtual array. Compared with previous work, the creative construction of virtual arrays in this paper allows the algorithm to ensure strong coherent signal processing and superior output performance with no degradation in coherence capability. The proposed algorithm firstly constructs a virtual array symmetric to the physical array to form a virtual antenna array model; secondly, a full-rank covariance matrix is obtained by matrix reconstruction; then, the direction vector and power of the signals are estimated; finally, the estimated parameters are used to reconstruct the interference plus noise covariance matrix (INCM) and calculate the weight vector. Simulation analysis verifies the superiority of the algorithm and the validity of theoretical analysis.

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基于虚拟阵列的相干信号鲁棒自适应波束形成算法
针对相干信号模型下波束形成性能下降的问题,提出了一种基于虚拟阵列的自适应波束形成算法。与以往的工作相比,本文创造性地构建了虚拟阵列,使该算法能够在不降低相干能力的情况下,确保较强的相干信号处理和优越的输出性能。该算法首先构造与物理阵列对称的虚拟阵列,形成虚拟天线阵列模型;其次,通过矩阵重构得到全秩协方差矩阵;然后,估计信号的方向矢量和功率;最后,利用估计的参数重构干扰加噪声协方差矩阵(INCM)并计算权重向量。仿真分析验证了算法的优越性和理论分析的有效性。
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来源期刊
Annals of Telecommunications
Annals of Telecommunications 工程技术-电信学
CiteScore
5.20
自引率
5.30%
发文量
37
审稿时长
4.5 months
期刊介绍: Annals of Telecommunications is an international journal publishing original peer-reviewed papers in the field of telecommunications. It covers all the essential branches of modern telecommunications, ranging from digital communications to communication networks and the internet, to software, protocols and services, uses and economics. This large spectrum of topics accounts for the rapid convergence through telecommunications of the underlying technologies in computers, communications, content management towards the emergence of the information and knowledge society. As a consequence, the Journal provides a medium for exchanging research results and technological achievements accomplished by the European and international scientific community from academia and industry.
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