Investigation of correlation effect between the signal and interference in GSC/LMS adaptive beamformer

Author

Tachawichan, Jirawat ; Jitapunkul, Somchai

Author_Institution

Electr. Eng. Dept., Chulalongkorn Univ., Bangkok, Thailand

fYear

2004

fDate

18-19 Nov. 2004

Firstpage

541

Lastpage

544

Abstract

We investigate the effect of correlation on the performance of the generalized sidelobe canceller (GSC). The analysis yields an explicit expression for the signal-to-interference-plus-noise ratio (SINR) at the output of GSC in terms of the different parameters affecting the performance, including the interference-to-noise ratio (INR), the signal-to-noise ratio (SNR), the spatial correlation, and the correlation between the desired and interfering signal. It can provide us insight of how the correlation between the desired signal and the interference can severely degrade the performance of the GSC system.

Keywords

adaptive antenna arrays; antenna radiation patterns; array signal processing; interference suppression; least mean squares methods; radiofrequency interference; LMS algorithm; SINR; SNR; adaptive array antenna systems; adaptive beamformer; correlation effect; desired signal; generalized sidelobe canceller; interference cancellation; interference-to-noise ratio; signal-to-interference-plus-noise ratio; signal-to-noise ratio; spatial correlation; Adaptive arrays; Antenna arrays; Degradation; Interference cancellation; Interference constraints; Least squares approximation; Narrowband; Performance analysis; Signal analysis; Signal to noise ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing and Communication Systems, 2004. ISPACS 2004. Proceedings of 2004 International Symposium on

Print_ISBN

0-7803-8639-6

Type

conf

DOI

10.1109/ISPACS.2004.1439115

Filename

1439115