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1. 西安邮电大学通信与信息工程学院 西安 710061
2. 西安交通大学电子信息学院 西安 710049
[ "赵季红,女,博士,西安邮电大学教授,西安交通大学教授、博士生导师,主要研究方向为宽带通信网、新一代网络的管理与控制。" ]
[ "雷佩,女,西安邮电大学硕士生,主要研究方向为智能天线波束成形。" ]
[ "王伟华,男,西安交通大学博士生,主要研究方向为大规模MIMO。" ]
[ "曲桦,男,博士,西安交通大学教授、博士生导师,主要研究方向为现代通信网、计算机网络体系结构。" ]
[ "贺丹,女,西安邮电大学硕士生,主要研究方向为智能天线波束成形。" ]
网络出版日期:2015-02,
纸质出版日期:2015-02-15
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赵季红, 雷佩, 王伟华, 等. 基于小波变换的RLS波束成形算法研究[J]. 电信科学, 2015,31(2):108-112.
Jihong Zhao, Pei Lei, Weihua Wang, et al. RLS Beamforming Algorithm Based on Wavelet Transform[J]. Telecommunication science, 2015, 31(2): 108-112.
赵季红, 雷佩, 王伟华, 等. 基于小波变换的RLS波束成形算法研究[J]. 电信科学, 2015,31(2):108-112. DOI: 10.11959/j.issn.1000-0801.2015029.
Jihong Zhao, Pei Lei, Weihua Wang, et al. RLS Beamforming Algorithm Based on Wavelet Transform[J]. Telecommunication science, 2015, 31(2): 108-112. DOI: 10.11959/j.issn.1000-0801.2015029.
为了解决递归最小二乘算法(RLS)在较低信噪比(SNR)、遗忘因子较小的环境中,对噪声敏感、收敛时参数估计误差大的问题,引入小波变换去噪思想,提出了基于小波变换的RLS 波束成形算法。该算法利用小波变换软阈值法进行信号去噪,再采用RLS 算法进行波束成形。最后对实验进行仿真,仿真结果表明,与传统的 RLS 算法相比,该算法具有较小的稳态误差和较快的跟踪速度和收敛速度,并且波束成形效果好。
On the basis of analyzing the recursive least square algorithm(RLS)
in order to improve the performance of RLS algorithm
the idea of denoising by wavelet transform was introduced and the RLS beamforming algorithm which is based on wavelet transform was put forward. This algorithm uses soft thresholding wavelet transform for signal denoising
solves the problem that the traditional Adaptive beamforming algorithm is sensitive to noise and the steady-state error is big under the environment of the low signal to noise ratio(SNR)and small forgetting factor. Finally
the simulation results show that compared with the traditional RLS algorithm
this algorithm has smaller steady-state error and fast tracking speed and convergence speed
and good results of beamforming.
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