Title :
A Widely-Linear LMS Algorithm for Adaptive Beamformer
Author :
JinYou, Qu ; Jianyun, Zhang ; Xin, Zhang
Author_Institution :
Hefei Electron. Eng. Inst., Hefei
Abstract :
A novel adaptive Array structure using widely-linear weight is proposed in this paper. MMSE law is used to evaluate the performance of the adaptive array. According to the widely-linear structure, the widely-linear LMS algorithm (WL-LMS) is used here, which uses widely-linear model of the received signal rather than linear model estimating the desired signal. This structure provides a unified framework for beamforming in circular and non-circular sources, and can get much less MMSE between the beamforming output and the desired signal. This algorithm has been tested for beamforming using BPSK and narrow-band FM signal.
Keywords :
adaptive antenna arrays; array signal processing; least mean squares methods; MMSE law; adaptive array structure; adaptive beamformer; noncircular source; widely linear LMS algorithm; widely linear weight; Adaptive arrays; Antennas and propagation; Array signal processing; Communications technology; Electromagnetic compatibility; Least squares approximation; Microwave antenna arrays; Microwave propagation; Signal processing; Signal processing algorithms; adaptive beamformer; noncircular/improper signal; widely-linear LMS algorithm;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2007 International Symposium on
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4244-1045-3
Electronic_ISBN :
978-1-4244-1045-3
DOI :
10.1109/MAPE.2007.4393451
