Feedback Subsampling in Temporally-Correlated Slowly-Fading Channels using Quantized CSI
Journal article, 2013

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.

Feedback subsampling

HARQ feedback

fast-fading channels

temporally-correlated channels

adaptive power allocation

quantized CSI


Behrooz Makki

Chalmers, Signals and Systems, Communication, Antennas and Optical Networks

Thomas Eriksson

Chalmers, Signals and Systems, Communication, Antennas and Optical Networks

IEEE Transactions on Communications

0090-6778 (ISSN)

Vol. 61 6 2282-2294 6510028

Areas of Advance

Information and Communication Technology

Subject Categories


Signal Processing



More information