IMP-Based Fast Adaptive Beamforming Algorithms

Author

Tanaka, Makoto ; Saitoh, Hideki ; Sano, Akira

Author_Institution

Dept. of Syst. Design Eng., Keio Univ., Yokohama

fYear

2006

fDate

12-14 July 2006

Firstpage

40

Lastpage

44

Abstract

This paper is concerned with new fast adaptive beamforming algorithms which are based on the internal model principle, to deal with fast fading environment to track the desired signal changes and suppress the interferences. The LMS and RLS algorithms for constructing nulls are derived by incorporating an AR model into the weight dynamics, and then can track fast fading environment. The convergence analysis of mean and mean-square error of the weight vector are also investigated and stability condition is clarified. Numerical simulation results show that the proposed algorithms can improve tracking ability and BER performance in DS-CDMA systems

Keywords

array signal processing; code division multiple access; fading; interference suppression; mean square error methods; numerical stability; radiofrequency interference; spread spectrum communication; BER; DS-CDMA systems; adaptive beamforming algorithms; convergence analysis; fading environment; interference suppression; internal model principle; mean-square error; stability condition; Array signal processing; Bit error rate; Convergence; Fading; Interference suppression; Least squares approximation; Multiaccess communication; Numerical simulation; Resonance light scattering; Stability analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensor Array and Multichannel Processing, 2006. Fourth IEEE Workshop on

Conference_Location

Waltham, MA

Print_ISBN

1-4244-0308-1

Type

conf

DOI

10.1109/SAM.2006.1706080

Filename

1706080