STUDY OF THE NULL DIRECTIONS ON THE PERFORMANCE OF DIFFERENTIAL BEAMFORMERS

Xuehan Wang, Israel Cohen, Jacob Benesty, Jingdong Chen

科研成果: 书/报告/会议事项章节会议稿件同行评审

4 引用 (Scopus)

摘要

Null directions are important parameters for differential beamformers, which play an important role on the beamforming performance. In this paper, we investigate the performance of differential beamformers as a function of the null directions. We first derive the directivity factor (DF) as an explicit function of null and show that the DF decreases to 0 if any null approaches to the desired look direction. We then validate the theoretical analysis through simulations using the beampattern, DF and signal-to-interference gain as the performance measures. The results show that: 1) the performance of a differential beamformer degrades significantly if there is any null close to the desired look direction; 2) with a fixed null direction, increasing the order of the differential beamformer can help improve performance.

源语言英语
主期刊名2022 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2022 - Proceedings
出版商Institute of Electrical and Electronics Engineers Inc.
4928-4932
页数5
ISBN(电子版)9781665405409
DOI
出版状态已出版 - 2022
活动2022 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2022 - Hybrid, 新加坡
期限: 22 5月 202227 5月 2022

出版系列

姓名ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
2022-May
ISSN(印刷版)1520-6149

会议

会议2022 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2022
国家/地区新加坡
Hybrid
时期22/05/2227/05/22

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