An STBC-OFDM System Based on Adaptive Transmitting Optimization Beamforming
Guangxin Yue · Beijing Youdian Xueyuan xuebao · 2005
An adaptive transmitting optimization beam-forming space time block coding-orthogonal frequency division multiplex (STBC-OFDM) system, called adaptive beamforming STBC-OFDM (ABF-STBC-OFDM) system based on channel state information (CSI), was proposed. And the optimization beam-forming weight vector was derived in case of maximal receiver signal-to-noise ratio. The performance of ABF-STBC-OFDM system when there are channel estimation errors was given. Performance and computer simulation results of the system over wireless Reyleigh fading channels show that all the diversity resource can explored by the system, and the performance of the system can be improved significantly when compared with STBC-OFDM, space-time trellis coding-OFDM(STTC-OFDM) and trellis code modulation-STBC-OFDM (TCM-STBC-OFDM) system.