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A new high-rate differential space-time block coding scheme

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1 Author(s)
Al-Dhahir, N. ; Univ. of Texas, Dallas, TX, USA

A new high-rate differential space-time transmission scheme based on spatial multiplexing of Alamouti-encoded information streams is developed. At the receiver, joint space-time differential interference cancellation and decoding is performed, realizing diversity and rate gains, without requiring channel knowledge or bandwidth expansion. Our focus is on the case of two information streams with two transmit antennas per stream on flat-fading channels for simplicity. However, using previously published techniques, the development readily extends to more than two information streams, to more than two transmit antennas per stream, and to frequency-selective channels.

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Communications Letters, IEEE  (Volume:7 ,  Issue: 11 )