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Published June 2016 | Submitted
Journal Article Open

Decode-and-Forward Relaying via Standard AWGN Coding and Decoding

Abstract

A framework is developed for decode-and-forward based relaying using standard coding and decoding that are good for the single-input single-output (SISO) additive white Gaussian noise channel. The framework is applicable to various scenarios and demonstrated for several important cases. Each of these scenarios is transformed into an equivalent Gaussian multiple-input multiple-output (MIMO) common-message broadcast problem, which proves useful even when all links are SISO ones. Over the effective MIMO broadcast channel, a recently developed Gaussian MIMO common-message broadcast scheme is applied. This scheme transforms the MIMO links into a set of parallel SISO channels with no loss of mutual information, using linear pre- and post-processing combined with successive decoding. Over these resulting SISO channels, "off-the-shelf" scalar codes may be used.

Additional Information

© 2015 IEEE. Manuscript received February 23, 2015; revised September 8, 2015; accepted October 31, 2015. Date of publication December 29, 2015; date of current version May 18, 2016. Communicated by S.-Y Chung, Associate Editor for Shannon Theory. The material in this paper was presenetd in part at the 2011 IEEE Information Theory Workshop (ITW), Paraty, Brazil, and at the 2012 IEEE ITW, Lausanne, Switzerland. The work of A. Khina was supported by the Feder Family Award, by the Yitzhak and Chaya Weinstein Research Institute for Signal Processing, and by the Clore Israel Foundation. The work of Y. Kochman was supported, in part, by the Israel Science Foundation (ISF) under grant No. 956/12. The work of U. Erez was supported, in part, by the ISF under Grant No. 1956/15. The work of G. W. Wornell was supported, in part, by the Air Force Office of Scientific Research (AFOSR) under Grant No. FA9550-11-1-0183, and the National Science Foundation (NSF) under Grant No. CCF-1319828. The authors thank Or Ordentlich for helping with the analysis of the full-duplex relay channel scenario of Section IV-B.

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August 20, 2023
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