Space-time block coding for four transmit antennas over time-selective fading channels: orthogonal or non-orthogonal design?

Zheng, F.-C. and Burr, A.G. (2003) Space-time block coding for four transmit antennas over time-selective fading channels: orthogonal or non-orthogonal design? In: 2003 IEEE 58th vehicular technology conference. IEEE Press, pp. 513-517. ISBN 0780379543 doi: 10.1109/VETECF.2003.1285070

Abstract/Summary

The paper deals with an issue in space time block coding (STBC) design. It considers whether, over a time-selective channel, orthogonal STBC (O-STBC) or non-orthogonal STBC (NO-STBC) performs better. It is shown that, under time-selectiveness, once vehicle speed has risen above a certain value, NO-STBC always outperforms O-STBC across the whole SNR range. Also, considering that all existing NO-STBC schemes have been investigated under quasi-static channels only, a new simple receiver is derived for the NO-STBC system under time-selective channels.