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Decision feedback differential detection for differential orthogonal space-time modulation with APSK signals over frequency-non-selective fading channels

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2 Author(s)
Aijun Song ; Dept. of Electr. & Comput. Eng., Delaware Univ., Newark, DE, USA ; Xiang-Gen Xia

Differential orthogonal space-time modulation (DOSTM) with amplitude/phase shift keying (APSK) signals has been proposed to improve the throughput of the DOSTM with phase shift keying (PSK) signals over quasi-static channels. In this paper, decision feedback differential detection (DF-DD) based on linear prediction is presented for the DOSTM with APSK signals (DOSTM-APSK) over frequency-non-selective fading channels. The proposed DF-DD offers better performance than the DD when the channel experiences fast fading. The coefficients of the linear prediction based DF-DD can be obtained by an adaptive RLS algorithm, where the channel statistics is not needed. The proposed DF-DD is also applicable to the general unitary differential space-time modulation (DSTM).

Published in:

Communications, 2003. ICC '03. IEEE International Conference on  (Volume:2 )

Date of Conference:

11-15 May 2003