Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2014, Vol. 37 ›› Issue (5): 26-30.doi: 10.13190/j.jbupt.2014.05.006

• Papers • Previous Articles     Next Articles

Burst Encoding Mechanism for Low Delay and High Reliable Service in Optical Burst Switching Networks

HUANG Sheng, LI Jia-liang, LI Gen, LI Ling-xia, LIU Huan-lin   

  1. The Key Laboratory of Optical Fiber Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2013-11-24 Online:2014-10-28 Published:2014-11-07

Abstract:

In order to guarantee high reliable service in optical burst switching(OBS)networks and reduce the end-to-end delay of bursts, an online burst encoding mechanism based on irregular repeat accumulate(IRA) codes was proposed. The parity-check matrix of IRA codes was adjusted into a special structure, and then an on line IRA (OL-IRA) code which can encode and decode burst online was constructed. Information data bursts are encoded by OL-IRA codes to recover lost bursts with redundant bursts. Simulations show that OL-IRA codes will guarantee the performance of burst loss recovery, and can also shorten the delay of burst loss recovery.

Key words: optical burst switching, on line-irregular repeat accumulate codes, online, burst loss recovery

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