Network Coding with Two-Way Relaying: Achievable Rate Regions and Diversity-Multiplexing Tradeoffs

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dc.creatorLiu, Chun-Hung
dc.creatorXue, Feng
dc.creatorAndrews, Jeffrey G.
dc.date2009-02-13
dc.date.accessioned2026-07-07T12:41:34Z
dc.date.available2026-07-07T12:41:34Z
dc.descriptionThis paper addresses the fundamental characteristics of information exchange via multihop network coding over two-way relaying in a wireless ad hoc network. The end-to-end rate regions achieved by time-division multihop (TDMH), MAC-layer network coding (MLNC) and PHY-layer network coding (PLNC) are first characterized. It is shown that MLNC does not always achieve better rates than TDMH, time sharing between TDMH and MLNC is able to achieve a larger rate region, and PLNC dominates the rate regions achieved by TDMH and MLNC. An opportunistic scheduling algorithm for MLNC and PLNC is then proposed to stabilize the two-way relaying system for Poisson arrivals whenever the rate pair is within the Shannon rate regions of MLNC and PLNC. To understand the two-way transmission limits of multihop network coding, the sum-rate optimization with or without certain traffic pattern and the end-to-end diversity-multiplexing tradeoffs (DMTs) of two-way transmission over multiple relay nodes are also analyzed.
dc.description27 pages, 7 figures, submitted to IEEE trans. on wireless communications
dc.identifierhttps://arxiv.org/abs/0902.2260
dc.identifierhttp://arxiv.org/abs/0902.2260
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219813
dc.subjectInformation Theory
dc.titleNetwork Coding with Two-Way Relaying: Achievable Rate Regions and Diversity-Multiplexing Tradeoffs
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