- Title
- Cooperative multi-sender index coding
- Creator
- Li, Min; Ong, Lawrence; Johnson, Sarah J.
- Relation
- ARC.FT140100219 http://purl.org/au-research/grants/arc/FT140100219
- Relation
- IEEE Transactions on Information Theory Vol. 65, Issue 3, p. 1725-1739
- Publisher Link
- http://dx.doi.org/10.1109/TIT.2018.2869161
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2019
- Description
- In this paper, we propose a new coding scheme and establish new bounds on the capacity region for the multi-sender unicast index-coding problem. We revisit existing partitioned distributed composite coding (DCC) proposed by Sadeghi et al. and identify its limitations in the implementation of multi-sender composite coding and in the strategy of sender partitioning. We then propose two new coding components to overcome these limitations and develop a multi-sender cooperative composite coding (CCC). We show that CCC can strictly improve upon partitioned DCC, and is the key to achieve optimality for a number of index-coding instances. The usefulness of CCC and its special cases is illuminated via non-trivial examples, and the capacity region is established for each example. Comparisons between CCC and other non-cooperative schemes in recent works are also provided to further demonstrate the advantage of CCC.
- Subject
- indexes; receivers; channel coding; unicast; satellite communication
- Identifier
- http://hdl.handle.net/1959.13/1407041
- Identifier
- uon:35684
- Identifier
- ISSN:0018-9448
- Rights
- © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
- Language
- eng
- Full Text
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