Feasibility of a novel beamforming algorithm via retrieving spatial harmonics  

作　　者：NOROLAHI Jafar AZMI Paeiz NASIRIAN Mahdi 

机构地区：[1]Electrical and Computer Engineering Department,Tarbiat Modares University,Tehran 14115,Iran [2]Department of Electrical and Computer Engineering,Sharif University of Technology,Tehran 11365,Iran

出　　处：《Journal of Systems Engineering and Electronics》2022年第1期38-46,共9页系统工程与电子技术（英文版）

摘　　要：This paper introduces an algorithm for beamforming systems by the aid of multidimensional harmonic retrieval(MHR).This algorithm resolves problems,removes limitations of sampling and provides a more robust beamformer.A new sample space is created that can be used for estimating weights of a new beamforming called spatial-harmonics retrieval beamformer(SHRB).Simulation results show that SHRB has a better performance,accuracy,and applicability and more powerful eigenvalues than conventional beamformers.A simple mathematical proof is provided.By changing the number of harmonics,as a degree of freedom that is missing in conventional beamformers,SHRB can achieve more optimal outputs without increasing the number of spatial or temporal samples.We will demonstrate that SHRB offers an improvement of 4 dB in signal to noise ratio(SNR) in bit error rate(BER) of 10~(-4) over conventional beamformers.In the case of direction of arrival(DOA) estimation,SHRB can estimate the DOA of the desired signal with an SNR of-25 dB,when conventional methods cannot have acceptable response.

关 键 词：multi-input-multi-output(MIMO) BEAMFORMING spatial and temporal signal processing multidimensional harmonic retrieval(MHR) space-time signal processing array signal processing 

分 类 号：TN929.5[电子电信—通信与信息系统]