- Title
- On the capacity of the binary-symmetric parallel-relay network
- Creator
- Ong, Lawrence; Johnson, Sarah J.; Kellett, Christopher M.
- Relation
- Transactions on Emerging Telecommunications Technologies Vol. 25, Issue 2, p. 217-230
- Publisher Link
- http://dx.doi.org/10.1002/ett.2561
- Publisher
- Wiley-Blackwell
- Resource Type
- journal article
- Date
- 2014
- Description
- We investigate the binary-symmetric parallel-relay network where there is one source, one destination, and multiple relays in parallel. We show that forwarding relays, where the relays merely transmit their received signals, achieve the capacity in two ways: with coded transmission at the source and a finite number of relays, or uncoded transmission at the source and a sufficiently large number of relays. On the other hand, decoding relays, where the relays decode the source message, re-encode, and forward it to the destination, achieve the capacity when the number of relays is small. In addition, we show that any coding scheme that requires decoding at any relay is suboptimal in large parallel-relay networks, where forwarding relays achieve strictly higher rates.
- Subject
- binary-symmetric parallel-relay network; parallel; relays
- Identifier
- http://hdl.handle.net/1959.13/1305387
- Identifier
- uon:21038
- Identifier
- ISSN:2161-3915
- Rights
- This is the peer reviewed version of the following article: Ong, Lawrence; Johnson, Sarah J.; Kellett, Christopher M. “On the capacity of the binary-symmetric parallel-relay network”, Transactions on Emerging Telecommunications Technologies Vol. 25, Issue 2, p. 217-230 (2014), which has been published in final form at http://dx.doi.org/10.1002/ett.2561. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
- Language
- eng
- Full Text
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