Code Design for Combined Space Time Trellis Codes and Beamforming on Slow Fading Channels
The performance of space-time codes can be dramatically improved by weighting transmitted signals. In this paper, we present the performance analysis of the combined space time trellis codes and beamforming, referred to as weighted space time trellis codes (WSTTCs). Contrary to the standard STTC, WSTTCs can achieve a full diversity order regardless of STTCs adopted at the transmitter.A new design criterion for WSTTCs has been proposed and the good codes based on this criterion have been found by computer search. Simulation results show that the proposed 4, 16, and 64-state WSTTCs not only outperform the standard STTCs with the same number of state by more than 2dB, but are also superior by about 0.3dB, 1.1dB and 2dB to the conventional beamforming scheme, which allocates full power in the direction of the eigenvector corresponding to the maximum singular value of the channel matrix.
Yonghui Li Branka Vucetic
School of Electrical and Information Engineering, University of Sydney Sydney, NSW 2006 Australia
国际会议
2006年IEEE信息理论国际会议(Proceedings of 2006 IEEE Information Theory Workshop ITW06)
成都
英文
473-477
2006-10-22（万方平台首次上网日期，不代表论文的发表时间）