On the non-coherent wideband multipath fading relay channel
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Medard_On the non-coherent.pdf
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Author(s)
Fawaz, Nadia
Medard, Muriel
Date Issued
July 2010
Journal
Proceedings of the IEEE International Symposium on Information Theory Proceedings (ISIT), 2010
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Citation
Fawaz, Nadia, and Muriel Medard. “On the Non-coherent Wideband Multipath Fading Relay Channel.” IEEE International Symposium on Information Theory Proceedings (ISIT); v. 2010. 679–683. © 2010 IEEE
Version
Final published version
Abstract
We investigate the multipath fading relay channel in the limit of a large bandwidth, and in the non-coherent setting, where the channel state is unknown to all terminals, including the relay and the destination.We propose a hypergraph model of the wideband multipath fading relay channel, and show that its min-cut is achieved by a non-coherent peaky frequency binning scheme. The so-obtained lower bound on the capacity of the wideband multipath fading relay channel turns out to coincide with the block-Markov lower bound on the capacity of the wideband frequency-division Gaussian (FD-AWGN) relay channel. In certain cases, this achievable rate also meets the cut-set upper-bound, and thus reaches the capacity of the non-coherent wideband multipath fading relay channel.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1109/ISIT.2010.5513582
