Title :
Transmit Beamforming for Frequency-Selective Channels
Author :
Liang, Yang-wen ; Schober, Robert ; Gerstacker, Wolfgang
Author_Institution :
Dept. of Elec. & Comp. Eng., Univ. of British Columbia, Vancouver, BC
Abstract :
In this paper, we propose beamforming schemes for frequency-selective channels with decision-feedback equalization (DFE) at the receiver. We consider both finite impulse response (FIR) and infinite impulse response (IIR) beamforming filters (BFFs). In case of IIR beamforming, we are able to derive closed-form expressions for the optimum BFFs. In addition, we provide an efficient numerical method for recursive calculation of the optimum FIR BFFs. Simulation and numerical results for typical GSM/EDGE channels confirm the significant performance gains achievable with beamforming compared to single-antenna transmission and optimized delay diversity.
Keywords :
diversity reception; equalisers; frequency selective surfaces; multifrequency antennas; receiving antennas; telecommunication channels; transient response; transmitting antennas; GSM/EDGE channels; beamforming filters; decision-feedback equalization; finite impulse response; frequency-selective channels; infinite impulse response; optimized delay diversity; single-antenna transmission; transmit beamforming; Array signal processing; Closed-form solution; Decision feedback equalizers; Delay; Finite impulse response filter; Frequency; GSM; IIR filters; Numerical simulation; Performance gain;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC-2006 Fall. 2006 IEEE 64th
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-0062-7
Electronic_ISBN :
1-4244-0063-5
DOI :
10.1109/VTCF.2006.106
