TY - GEN
T1 - A new converse in rate-distortion theory
AU - Kostina, Victoria
AU - Verdu, Sergio
PY - 2012
Y1 - 2012
N2 - This paper shows new finite-blocklength converse bounds applicable to lossy source coding as well as joint source-channel coding, which are tight enough not only to prove the strong converse, but to find the rate-dispersion functions in both setups. In order to state the converses, we introduce the d-tilted information, a random variable whose expectation and variance (with respect to the source) are equal to the rate-distortion and rate-dispersion functions, respectively.
AB - This paper shows new finite-blocklength converse bounds applicable to lossy source coding as well as joint source-channel coding, which are tight enough not only to prove the strong converse, but to find the rate-dispersion functions in both setups. In order to state the converses, we introduce the d-tilted information, a random variable whose expectation and variance (with respect to the source) are equal to the rate-distortion and rate-dispersion functions, respectively.
KW - Converse
KW - Shannon theory
KW - finite blocklength regime
KW - joint source-channel coding
KW - lossy source coding
KW - memoryless sources
KW - rate-distortion theory
UR - http://www.scopus.com/inward/record.url?scp=84868598554&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84868598554&partnerID=8YFLogxK
U2 - 10.1109/CISS.2012.6310949
DO - 10.1109/CISS.2012.6310949
M3 - Conference contribution
AN - SCOPUS:84868598554
SN - 9781467331401
T3 - 2012 46th Annual Conference on Information Sciences and Systems, CISS 2012
BT - 2012 46th Annual Conference on Information Sciences and Systems, CISS 2012
T2 - 2012 46th Annual Conference on Information Sciences and Systems, CISS 2012
Y2 - 21 March 2012 through 23 March 2012
ER -