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Design of channel-estimate-dependent space-time block codes

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3 Author(s)
Jo╠łngren, G. ; Dept. of Signals, R. Inst. of Technol., Stockholm, Sweden ; Skoglund, M. ; Ottersten, B.

So far, the assumption of no channel knowledge at the transmitter has generally been inherent in the design of space-time codes. This paper, on the other hand, assumes that quantized channel information obtained from a feedback link is available at the transmitter and investigates how such channel information can be incorporated into the design of unstructured space-time block codes. Efficient codes are found by means of a gradient search over a continuous alphabet. Simulation results for an uncorrelated Rayleigh fading scenario using two and four transmit antennas and one receive antenna show the benefits of the code designs.

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Communications, IEEE Transactions on  (Volume:52 ,  Issue: 7 )