Decomposed LT Codes for Cooperative Communications

In order to reduce computation complexity and latency in cooperative communication system based on fountain code, a decomposed LT codes (DLT) based cooperative transmission scheme was proposed. The scheme comprises of two layers of random encoding but only a single layer of decoding. A general decom...

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Bibliographic Details
Published in:International journal of wireless information networks 2014-12, Vol.21 (4), p.317-324
Main Authors: Zhu, Kaiyan, Wang, Hongyu, Niu, Fanglin, Jiang, Fengjiao
Format: Article
Language:English
Subjects:
Communication systems
Computation
Computer simulation
Construction
Decoding
Decomposition
Electrical Engineering
Engineering
Networks
Packet transmission
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Summary:In order to reduce computation complexity and latency in cooperative communication system based on fountain code, a decomposed LT codes (DLT) based cooperative transmission scheme was proposed. The scheme comprises of two layers of random encoding but only a single layer of decoding. A general decomposition technique for the decomposed LT codes construction is developed. The transmission latency for the proposed scheme was analyzed. Simulation results show that the total time consumed under the proposed scheme can be significantly reduced compared to direct transmission and conventional cooperative transmission based on LT codes in the medium to high packet erasure rate regimes. Moreover, With the increase of packet erasure rate, the advantage of the proposed scheme is more evident.
ISSN:1068-9605
1572-8129
DOI:10.1007/s10776-014-0249-5