- Title
- Multi-way relay networks: orthogonal uplink, source-channel separation and code design
- Creator
- Timo, Roy; Lechner, Gottfried; Ong, Lawrence; Johnson, Sarah
- Relation
- Australian Research Council.DP120102123
- Relation
- IEEE Transactions on Communications Vol. 61, Issue 2, p. 753-768
- Publisher Link
- http://dx.doi.org/10.1109/TCOMM.2012.121112.110730
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2013
- Description
- We consider a multi-way relay network with an orthogonal uplink and correlated sources, and we characterise reliable communication (in the usual Shannon sense) with a single-letter expression. The characterisation is obtained using a joint source-channel random-coding argument, which is based on a combination of Wyner et al.'s Cascaded Slepian-Wolf Source Coding and Tuncel's Slepian-Wolf Coding over Broadcast Channels. We prove a separation theorem for the special case of two nodes; that is, we show that a modular code architecture with separate source and channel coding functions is (asymptotically) optimal. Finally, we propose a practical coding scheme based on low-density parity-check codes, and we analyse its performance using multi-edge density evolution.
- Subject
- joint source-channel coding; two-way relay network; source-channel seperation
- Identifier
- http://hdl.handle.net/1959.13/1059305
- Identifier
- uon:16567
- Identifier
- ISSN:0090-6778
- Language
- eng
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