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Low-Complexity Multiple-Component Turbo Decoding Aided Hybrid ARQ

Chen, Hong, Maunder, Robert G. and Hanzo, Lajos (2011) Low-Complexity Multiple-Component Turbo Decoding Aided Hybrid ARQ IEEE Transactions on Vehicular Technology, 60, (4), pp. 1571-1577.

Record type: Article


Previous research has focused on improving the throughput of Hybrid Automatic Repeat reQuest (HARQ) schemes. However, since turbo codes have been introduced into HARQ schemes, their complexity has increased owing to the iterative Bahl, Cocke, Jelinek and Raviv (BCJR) operations that are required following each retransmission. This paper explores the complexity of turbo HARQ schemes and proposes a new Early Stopping (ES) approach for iterative decoding based on Mutual Information (MI), which dynamically determines the appropriate number of BCJR operations to be performed following each Incremental-Redundancy (IR) transmission. We demonstrate that the proposed ES based Multiple-Component Turbo Code (MCTC) aided and systematic Twin-Component Turbo Code (TCTC) assisted HARQ schemes exhibit a 60% to 85% reduced complexity for SNRs below -2dB, without degrading the Packet Loss Ratio (PLR) and the throughput.

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Published date: 15 May 2011
Organisations: Southampton Wireless Group


Local EPrints ID: 271520
ISSN: 0018-9545
PURE UUID: 1821cfd4-1797-41fa-8e04-b04f1b61da8e
ORCID for Robert G. Maunder: ORCID iD

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Date deposited: 07 Sep 2010 15:00
Last modified: 18 Jul 2017 06:41

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Author: Hong Chen
Author: Robert G. Maunder ORCID iD
Author: Lajos Hanzo

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