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CLC number: TP393.0

On-line Access: 2017-12-04

Received: 2016-06-21

Revision Accepted: 2016-11-30

Crosschecked: 2017-10-31

Cited: 0

Clicked: 5949

Citations:  Bibtex RefMan EndNote GB/T7714


Xiu-xiu Wen


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Frontiers of Information Technology & Electronic Engineering  2017 Vol.18 No.10 P.1601-1613


Performance analysis and optimization for chunked network coding based wireless cooperative downloading systems

Author(s):  Xiu-xiu Wen, Hui-qiang Wang, Jun-yu Lin, Guang-sheng Feng, Hong-wu Lv, Ji-zhong Han

Affiliation(s):  College of Computer Science and Technology, Harbin Engineering University, Harbin 150001, China; more

Corresponding email(s):   wenxiuxiu@hrbeu.edu.cn

Key Words:  Wireless environments, Cooperative downloading, Chunked network coding, Markov process

Xiu-xiu Wen, Hui-qiang Wang, Jun-yu Lin, Guang-sheng Feng, Hong-wu Lv, Ji-zhong Han. Performance analysis and optimization for chunked network coding based wireless cooperative downloading systems[J]. Frontiers of Information Technology & Electronic Engineering, 2017, 18(10): 1601-1613.

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journal="Frontiers of Information Technology & Electronic Engineering",
publisher="Zhejiang University Press & Springer",

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%T Performance analysis and optimization for chunked network coding based wireless cooperative downloading systems
%A Xiu-xiu Wen
%A Hui-qiang Wang
%A Jun-yu Lin
%A Guang-sheng Feng
%A Hong-wu Lv
%A Ji-zhong Han
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%I Zhejiang University Press & Springer
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T1 - Performance analysis and optimization for chunked network coding based wireless cooperative downloading systems
A1 - Xiu-xiu Wen
A1 - Hui-qiang Wang
A1 - Jun-yu Lin
A1 - Guang-sheng Feng
A1 - Hong-wu Lv
A1 - Ji-zhong Han
J0 - Frontiers of Information Technology & Electronic Engineering
VL - 18
IS - 10
SP - 1601
EP - 1613
%@ 2095-9184
Y1 - 2017
PB - Zhejiang University Press & Springer
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DOI - 10.1631/FITEE.1601361

Dense network coding (NC) is widely used in wireless cooperative downloading systems. Wireless devices have limited computing resources. Researchers have recently found that dense NC is not suitable because of its high coding complexity, and it is necessary to use chunked NC in wireless environments. However, chunked NC can cause more communications, and the amount of communications is affected by the chunk size. Therefore, setting a suitable chunk size to improve the overall performance of chunked NC is a prerequisite for applying it in wireless cooperative downloading systems. Most of the existing studies on chunked NC focus on centralized wireless broadcasting systems, which are different from wireless cooperative downloading systems with distributed features. Accordingly, we study the performance of chunked NC based wireless cooperative downloading systems. First, an analysis model is established using a markov process taking the distributed features into consideration, and then the block collection completion time of encoded blocks for cooperative downloading is optimized based on the analysis model. Furthermore, queuing theory is used to model the decoding process of the chunked NC. Combining queuing theory with the analysis model, the decoding completion time for cooperative downloading is optimized, and the optimal chunk size is derived. Numerical simulation shows that the block collection completion time and the decode completion time can be largely reduced after optimization.




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