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Feedback Subsampling in Temporally-Correlated Slowly-Fading Channels using Quantized CSI

Behrooz Makki (Institutionen för signaler och system, Kommunikationssystem) ; Thomas Eriksson (Institutionen för signaler och system, Kommunikationssystem)
IEEE Transactions on Communications (0090-6778). Vol. 61 (2013), 6, p. 2282-2294.
[Artikel, refereegranskad vetenskaplig]

This paper studies the problem of feedback subsampling in temporally-correlated wireless networks utilizing quantized channel state information (CSI). Under both peak and average power constraints, the system data transmission efficiency is studied in two scenarios. First, we focus on the case where the codewords span one fading block. In the second scenario, the throughput is determined for piecewise slowly-fading channels where the codewords are so long that a finite number of correlated gain realizations are experienced during each codeword transmission. Considering different temporal correlation conditions in both scenarios, substantial throughput increment is observed with feedback rates well below 1 bit per slot.

Nyckelord: Feedback subsampling; temporally-correlated channels; quantized CSI; HARQ feedback; fast-fading channels; adaptive power allocation



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Denna post skapades 2013-06-17. Senast ändrad 2016-06-30.
CPL Pubid: 178646

 

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