Space-Time Trellis Codes with Linear Precoding for Transmit Beamforming

Conference: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
09/11/2005 - 09/14/2005 at Berlin, Germany

Proceedings: PIMRC 2005

Pages: 5Language: englishTyp: PDF

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Li, Yonghui; Tang, Yang; Vucetic, Branka (Telecommunication Lab, School of Electrical & Info. Eng, University of Sydney, NSW 2006, Australia)

A space time trellis coding scheme with linear precoding (STTC-LP) for transmit beamforming is presented in this paper. The upper bounds on pairwise error probability (PEP) over quasi-static and fast fading channels are derived, and new design criteria are proposed. It is shown that STTC-LP can achieve not only the maximum received SNR but also a significant coding gain. Based on the design criteria the optimum 4-state codes are derived by the systematic code search. Simulation results show that the new 4-state STTC-LP is superior by about 1.5dB and 4.0dB at the FER of 1.0e-2 over quasi-static fading channels, and by about 8dB and 10dB at the BER of 1.0e-4 over fast fading channels, to the beamforming and Tarokh-Seshadri-Calderbank (TSC) codes, respectively.