@inproceedings{Konstantinos2004,
abstract = {This paper1 studies the transmission of a continuous source over a two-hop fading channel. The source data traverses at least one intermediate node in order to reach the destination node. We assume a Gaussian source with Rayleigh fading links, and model the effect of each link through its outage capacity. We start with a single link, and optimize the transmission rate to minimize the received distortion. This minimum distortion is characterized as a function of transmission time, average channel gain, and transmitted power. We then consider a two-hop channel and optimize the transmission rates and transmission times over the two links. Two cases are compared: (i) The relay is allowed to optimize the transmission rate over the second link; and (ii) The relay retransmits the received bits over the second link at the same rate. Numerical examples show that both types of relays perform similarly over a wide parameter range of interest We characterize the minimum achievable distortion in each case when the ratio between channel gains becomes large, and show that the former (smart) relay gives a performance gain of at most three dB. {\textcopyright} 2004 IEEE.},
author = {Zachariadis, K.E. and Honig, M.L. and Katsaggelos, A.K.},
booktitle = {IEEE MILCOM 2004. Military Communications Conference, 2004.},
doi = {10.1109/MILCOM.2004.1493258},
isbn = {0-7803-8847-X},
pages = {134--139},
publisher = {IEEE},
title = {{Source fidelity over a two-hop fading channel}},
url = {http://ieeexplore.ieee.org/document/1493258/},
volume = {1},
year = {2004}
}

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