Differential space-time coding for frequency-selective channels |
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| Authors: | Diggavi S.N. Al-Dhahir N. Stamoulis A. Calderbank A.R. |
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| Affiliation: | AT&T Shannon Lab., Florham Park, NJ; |
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| Abstract: | We introduce two space-time transmission schemes which allow full-rate and full-diversity noncoherent communications using two transmit antennas over fading frequency-selective channels. The first scheme operates in the frequency domain where it combines differential Alamouti (seeIEEE J. Select. Areas Commun., vol.16, p.1451-58, Nov. 1998) space-time block-coding (STBC) with OFDM. The second scheme operates in the time domain and employs differential time-reversal STBC to guarantee blind channel identifiability without the need for temporal oversampling or multiple receive antennas |
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