Research Article
Time-switched Space-time Coded OFDM over Time-varying Channels
@INPROCEEDINGS{10.1109/ChinaCom.2011.6158136, author={Jiyu Jin and Guiyue Jin and Zhisen Wang}, title={Time-switched Space-time Coded OFDM over Time-varying Channels}, proceedings={6th International ICST Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2012}, month={3}, keywords={mimo ofdm time-switched transmit diversity space time coding time-vary channel}, doi={10.1109/ChinaCom.2011.6158136} }- Jiyu Jin
Guiyue Jin
Zhisen Wang
Year: 2012
Time-switched Space-time Coded OFDM over Time-varying Channels
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2011.6158136
Abstract
In this paper, we propose a time-switched space-time coded orthogonal frequency division multiplexing scheme over time-varying channels. The base station can use the proposed TSST-OFDM scheme with only two power amplifiers for four transmit antennas. For a given space-time code, we show that the signal to inter-antenna interference ratio is a function of Doppler frequency in time-varying channels. The proposed scheme not only gets time-switched diversity and lower decoding complexity, but also less sensitive to the time-varying channels, hence it exhibits better performance than quasi-orthogonal space-time coded scheme.
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