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Partial Soft Decode and Forward

Ahmed, Pir S., Maunder, Robert G. and Hanzo, Lajos (2011) Partial Soft Decode and Forward At IEEE Vehicular Technology Conference, United States.

Record type: Conference or Workshop Item (Other)

Abstract

Soft Decode and Forward (SDF) cooperation techniques have been shown to improve the performance of Distributed Turbo Coding (DTC) schemes, in which the Source Node (SN) and Relay Node (RN) employ convolutional codes, while the Destination Node (DN) employs a turbo decoder. However, this technique has not be able to mitigate the typical error floors that are associated with DTC. In this paper, we mitigate these error floors by upgrading the SDF technique to a scheme in which turbo codes are employed at the SN, RN and DN. We demonstrate that this scheme is capable of offering significant gains over both Amplify and Forward (AF) and classic direct-transmission schemes, even if only partial decoding is performed in the RN. More specifically, in our Partial Soft Decode and Forward (P-SDF) scheme, there is no excessive penalty associated with terminating the RN's iterative decoding process before convergence is achieved, as a benefit of the soft nature of its modulation scheme.

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More information

Published date: 5 September 2011
Additional Information: Event Dates: September 2011
Venue - Dates: IEEE Vehicular Technology Conference, United States, 2011-09-01
Keywords: Modulation, Channel coding, cooperative diversity, iterative processing
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 272096
URI: http://eprints.soton.ac.uk/id/eprint/272096
PURE UUID: 1e852697-c326-41a7-a7b2-545d890c219f
ORCID for Robert G. Maunder: ORCID iD orcid.org/0000-0002-7944-2615

Catalogue record

Date deposited: 11 Mar 2011 18:15
Last modified: 18 Jul 2017 06:34

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Contributors

Author: Pir S. Ahmed
Author: Robert G. Maunder ORCID iD
Author: Lajos Hanzo

University divisions

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