Title :
A new eigen decomposition based algorithm for beamforming in CDMA communication systems
Author :
Tavassoli, Farhad ; Abolhassani, Bahman ; Oraizi, Homayoon
Author_Institution :
Coll. of Electr. Eng., Iran Univ. of Sci. & Technoligy, Tehran, Iran
Abstract :
A new adaptive beamforming method for direct sequence code division multiple access (DS-CDMA) communication systems is proposed, which has low computational load. The proposed method needs only 2N+1 complex multiplications and 2N-1 complex additions, where N is the number of antennas in the array. We evaluate the performance of the proposed method in estimating the angle-of-arrival (AOA) of the desired signal and in producing the array beam pattern. Moreover, the performance of the proposed method in alleviating the probability of bit error in both fading and non-fading channel is verified. It is observed that although the proposed method has low computational load, nevertheless it has desirable performance.
Keywords :
adaptive antenna arrays; array signal processing; code division multiple access; direction-of-arrival estimation; eigenvalues and eigenfunctions; error statistics; fading channels; probability; spread spectrum communication; AOA; DS-CDMA communication systems; adaptive beamforming method; angle-of-arrival estimation; antenna array; array beam pattern; bit error; complex additions; complex multiplications; direct sequence code division multiple access communication systems; eigen decomposition based algorithm; fading channels; low computational load; non-fading channel; performance evaluation; probability; Antenna arrays; Array signal processing; Arrays; Covariance matrix; Fading; Multiaccess communication; Adaptive Antenna; Beamforming; CDMA; Eigenvector Decomposition; Smart Antenna;
Conference_Titel :
GCC Conference (GCC), 2006 IEEE
Conference_Location :
Manama
Print_ISBN :
978-0-7803-9590-9
Electronic_ISBN :
978-0-7803-9591-6
DOI :
10.1109/IEEEGCC.2006.5686192
