TY - GEN
T1 - Distortion lower bounds for finite dimensional joint source-channel coding
AU - Ingber, Amir
AU - Leibowitz, Itai
AU - Zamir, Ram
AU - Feder, Meir
PY - 2008
Y1 - 2008
N2 - In this work we consider joint source-channel coding (JSCC) schemes that are limited to work in blocks of nite length. We focus on the high resolution and high signal to noise ratio (SNR) regime, and derive new lower bounds for the distortion of JSCC schemes over rth-moment constrained additive noise channels. These new bounds are based on the method of Ziv and Zakai[11], combined with the Rényi information measure, as was recently proposed by Leibowitz and Zamir[5]. Numerical results are presented for the case of Gaussian source and channel, and it is shown that the new bounds improve upon Shannon's original bound in several cases, including bandwidth expansion and reduction.
AB - In this work we consider joint source-channel coding (JSCC) schemes that are limited to work in blocks of nite length. We focus on the high resolution and high signal to noise ratio (SNR) regime, and derive new lower bounds for the distortion of JSCC schemes over rth-moment constrained additive noise channels. These new bounds are based on the method of Ziv and Zakai[11], combined with the Rényi information measure, as was recently proposed by Leibowitz and Zamir[5]. Numerical results are presented for the case of Gaussian source and channel, and it is shown that the new bounds improve upon Shannon's original bound in several cases, including bandwidth expansion and reduction.
UR - http://www.scopus.com/inward/record.url?scp=52349083000&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2008.4595174
DO - 10.1109/ISIT.2008.4595174
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AN - SCOPUS:52349083000
SN - 9781424422579
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 1183
EP - 1187
BT - Proceedings - 2008 IEEE International Symposium on Information Theory, ISIT 2008
T2 - 2008 IEEE International Symposium on Information Theory, ISIT 2008
Y2 - 6 July 2008 through 11 July 2008
ER -