Title :
An adaptive beamforming algorithm for MC-CDMA systems with antenna array
Author :
Kim, Chan Kyu ; Kim, Min Taig ; Cho, Yong Soo
Author_Institution :
Radio & Broadcasting Technol. Lab., ETRI, Taejon, South Korea
Abstract :
This paper presents an adaptive beamforming algorithm for MC-CDMA system with adaptive antenna array. The proposed adaptive beamforming algorithm for the MC-CDMA systems is derived by (1) calculating the error signals between the pilot symbols of desired user and the received pilot signals in the frequency-domain, (2) transforming the frequency-domain error signals into time-domain error signals, (3) updating the filter coefficients of the adaptive beamformer in the direction of minimizing the MSE. The convergence behavior and user-capacity improvement of the proposed approach are demonstrated through computer simulation by applying it to the MC-CDMA system in the presence of interference from other users
Keywords :
adaptive antenna arrays; array signal processing; channel capacity; code division multiple access; convergence of numerical methods; direction-of-arrival estimation; filtering theory; frequency-domain analysis; intersymbol interference; land mobile radio; multipath channels; multiuser channels; time-domain analysis; BER performance; DOA; MC-CDMA systems; MSE minimization; adaptive antenna array; adaptive beamforming algorithm; computer simulation; convergence behavior; filter coefficients updating; frequency-domain error signals; high data-rate wireless transmission; intersymbol interference; mobile radio communication; multimedia services; multipath propagation; received pilot signals; time-domain error signals; user-capacity improvement; Adaptive arrays; Adaptive filters; Adaptive systems; Antenna arrays; Array signal processing; Computer errors; Computer simulation; Convergence; Multicarrier code division multiple access; Time domain analysis;
Conference_Titel :
Communications, 2000. ICC 2000. 2000 IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-6283-7
DOI :
10.1109/ICC.2000.853647
