TY - GEN
T1 - Distortion exponent in MIMO channels with feedback
AU - Gündüz, Deniz
AU - Goldsmith, Andrea
AU - Poor, H. Vincent
PY - 2009/12/7
Y1 - 2009/12/7
N2 - The transmission of a Gaussian source over a blockfading multiple antenna channel in the presence of a feedback link is considered. The feedback link is assumed to be an error and delay free link of capacity 1 bit per channel use. Under the short-term power constraint, the optimal exponential behavior of the end-to-end average distortion is characterized for all source-channel bandwidth ratios. It is shown that the optimal transmission strategy is successive refinement source coding followed by progressive transmission over the channel, in which the channel block is allocated dynamically among the layers based on the channel state using the feedback link as an instantaneous automatic repeat request (ARQ) signal.
AB - The transmission of a Gaussian source over a blockfading multiple antenna channel in the presence of a feedback link is considered. The feedback link is assumed to be an error and delay free link of capacity 1 bit per channel use. Under the short-term power constraint, the optimal exponential behavior of the end-to-end average distortion is characterized for all source-channel bandwidth ratios. It is shown that the optimal transmission strategy is successive refinement source coding followed by progressive transmission over the channel, in which the channel block is allocated dynamically among the layers based on the channel state using the feedback link as an instantaneous automatic repeat request (ARQ) signal.
UR - https://www.scopus.com/pages/publications/76249122305
U2 - 10.1109/ITW.2009.5351220
DO - 10.1109/ITW.2009.5351220
M3 - Conference contribution
SN - 9781424449835
T3 - 2009 IEEE Information Theory Workshop, ITW 2009
SP - 293
EP - 297
BT - 2009 IEEE Information Theory Workshop, ITW 2009
T2 - 2009 IEEE Information Theory Workshop, ITW 2009
Y2 - 11 October 2009 through 16 October 2009
ER -