Lattice-based Wyner-Ziv Coding for Parallel Gaussian Two-Way Relay Channels

Abstract : Parallel two-way relay channel models a cooperative communication scenario where a relay helps two terminals to exchange their messages over independent Gaussian channels. For the single channel case, we have shown previously that lattice-based physical layer network coding achieves the same rate as compress-and-forward scheme with a random coding strategy. A direct extension of this lattice-based scheme to parallel Gaussian channel is to repeat the same strategy for each subchannel. However this approach is not scalable with the number of sub-channels since the complexity of the scheme becomes prohibitive when a large number of sub-channels is employed. In this contribution, we investigate a lattice-based physical layer network coding scheme where the relay jointly processes all the sub-channels together. We characterize the rate region allowed by our coding scheme and assess the performance penalty compared to the separate channel processing approach.
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Contributor : Pierre Duhamel <>
Submitted on : Thursday, March 28, 2013 - 4:15:33 PM
Last modification on : Wednesday, January 23, 2019 - 2:39:24 PM



Sinda Smirani, Mohamed Kamoun, Mireille Sarkiss, Abdellatif Zaidi, Pierre Duhamel. Lattice-based Wyner-Ziv Coding for Parallel Gaussian Two-Way Relay Channels. 2013 IEEE Wireless Communications and Networking Conference (WCNC), Apr 2013, Shanghai, China. pp.1-5, ⟨10.1109/wcnc.2013.6554937 ⟩. ⟨hal-00805703⟩



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