Title :
A new blind adaptive algorithm based on Lagrange´s formula for a smart antenna system in CDMA mobile communications
Author :
Shim, Donghee ; Choi, Seungwon
Author_Institution :
Sch. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
A new adaptive beamforming procedure is presented. The main contribution of the proposed technique is in its simplicity without loss of accuracy. The computational load is about O(2N2+6N). It can further be reduced to O(4.5N) by approximating the autocovariance matrix with the instantaneous signal vector at each snapshot. The proposed technique is applied to the base station of a code division multiple access (CDMA) mobile communication system to demonstrate its performance in terms of the SINR (signal to interference+noise ratio), BER (bit-error-rate), and eventually the capacity of a given CDMA cell/sector
Keywords :
adaptive antenna arrays; adaptive signal processing; array signal processing; cellular radio; code division multiple access; computational complexity; covariance matrices; error statistics; radiofrequency interference; BER; CDMA cell/sector capacity; CDMA mobile communications; Lagrange´s formula; SINR; adaptive beamforming; autocovariance matrix; base station; bit-error-rate; blind adaptive algorithm; code division multiple access; computational load; instantaneous signal vector; performance; signal to interference+noise ratio; smart antenna system; snapshot; Adaptive algorithm; Adaptive arrays; Antenna arrays; Array signal processing; Eigenvalues and eigenfunctions; Lagrangian functions; Mobile antennas; Mobile communication; Multiaccess communication; Signal to noise ratio;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686038
