| Abstract
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<p>We consider serially concatenated … <p>We consider serially concatenated block codes in a hybrid ARQ scheme using iterative decoding. The extrinsic information generated in the iterative decoding process is saved and used when a retransmission is decoded. Two different strategies are examined; one using the extrinsic information only in the very first iteration, whereas the other uses it in all subsequent iterations until another retransmission arrives. The latter can be seen as turbo or concatenated code combining whereas the former, where the extrinsic information is used only once may be seen as code doping, providing an alternative perspective. The strategy of saving the extrinsic information is also compared to traditional type-III, equal gain diversity combining. Using the extrinsic information from previous retransmission is shown to improve performance not only in terms of bit error rate but also in terms of throughput and convergence speed and requires only negligible additional decoder complexity. The performance of this strategy is however not as good as simple equal gain combining. As a consequence, the investigated schemes are not competitive alternatives, however, the code doping procedure can be used in conjunction with traditional diversity combining schemes, improving further on convergence speed.</p>ng further on convergence speed.</p>
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| Author
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Elisabeth Uhlemann +
, Tor M. Aulin +
, Lars K. Rasmussen +
, Per-Arne Wiberg +
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| Conference
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The IEEE Wireless Communications and Networking Coneference, 20-20 March, New Orleans, LA, USA
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| DOI
|
http://dx.doi.org/10.1109/WCNC.2003.1200482 +
|
| Diva
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http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:237582
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| EndPage
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854 +
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| HostPublication
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The IEEE Wireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE +
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| PublicationType
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Conference Paper +
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| Publisher
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IEEE +
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| Series
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IEEE Wireless Communications and Networking Conference ; 2003, vol. 2 +
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| StartPage
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849 +
|
| Title
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Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
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| Year
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2003 +
|
| Has queryThis property is a special property in this wiki.
|
Publications:Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
, Publications:Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
, Publications:Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
, Publications:Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
, Publications:Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
, Publications:Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
, Publications:Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
, Publications:Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
, Publications:Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
, Publications:Packet combining and doping in concatenated hybrid ARQ schemes using iterative decoding +
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| Categories |
Publication +
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| Modification dateThis property is a special property in this wiki.
|
26 June 2014 03:42:01 +
|
