A reverse link beamforming based on simplex downhill algorithm for time-varying channel environments

Joonsung Lee, Charigheon Oh, Chunayong Lee
2003 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484)  
New beamforming method based on simplex downhill optimaization process has been presented for the reverse link CDMA systems. The proposed system performs code-filtering at each antenna for each user. It is shown that for fast fading channels, conventional sqare error based cost functions can yield poor results. A new method is proposed based on a variation of the SINR cost function coupled with optimal time variying channel estimation to improve signal tracking. The new beamforming method gives
more » ... lower computations and faster convergence properties than existing algorithms in fast faing enviromnment. The simulation results show that the proposed algorithm has a better BER performance in the case of the timevaring channel.
doi:10.1109/vetecf.2003.1285013 fatcat:7qbm46lhq5bqzn7b5q5wpf74wi