Title :
Robust beamforming for coherent signals in the presence of steering vector and correlation matrix errors
Author :
Lei Zhang ; Wei Liu
Author_Institution :
Commun. Technol. Lab., Huawei Technol. Co., Ltd., Shenzhen, China
Abstract :
Based on the uniform linear array structure and the spatial-smoothing technique, a robust beamformer for the reception of coherent signals is proposed by considering both the steering vector error and the sample correlation matrix error. The resultant constrained optimisation problem is transformed into a generalised eigenvector problem and three implementations are studied, including forward-only, forward-backward, and real-valued cases, supported by simulation results.
Keywords :
array signal processing; eigenvalues and eigenfunctions; matrix algebra; signal sampling; smoothing methods; constrained optimisation problem; correlation matrix errors; forward-backward cases; forward-only cases; generalised eigenvector problem; real-valued cases; robust coherent signals beamforming; sample correlation matrix error; spatial-smoothing technique; steering vector error; uniform linear array structure; Array signal processing; Arrays; Correlation; Interference; Robustness; Signal to noise ratio; Vectors; Robust beamforming; coherent signals; forward backward; generalized eigen-vector problem; spatial smoothing;
Conference_Titel :
Communications and Networking in China (CHINACOM), 2012 7th International ICST Conference on
Conference_Location :
Kun Ming
Print_ISBN :
978-1-4673-2698-8
Electronic_ISBN :
978-1-4673-2697-1
DOI :
10.1109/ChinaCom.2012.6417506
