高技术通讯
高技術通訊
고기술통신
HIGH TECHNOLOGY LETTERS
2014年
7期
690-695
,共6页
网络编码%多速率%组播间网络编码%层间等级网络编码%遗传算法
網絡編碼%多速率%組播間網絡編碼%層間等級網絡編碼%遺傳算法
망락편마%다속솔%조파간망락편마%층간등급망락편마%유전산법
network coding%multirate%intersession network code%interlayer hierarchical network code%genetic algorithm
面向单信源异构信宿网络，研究了层间等级网络编码的编码类型优化。基于遗传算法，提出了一种最优编码类型的快速搜索方案。该方案充分考虑了信源输出链路上进行的层间等级网络编码的编码类型对整个网络传输性能的影响，将网络总吞吐量作为评价编码类型优劣的标准，设计了符合层间等级网络编码本质特性的遗传操作。实验结果表明，与分层组播网络编码和基于现有启发式算法的层间等级网络编码相比，基于本文方案实现的层间等级网络编码能够为单信源异构信宿网络获得更高的网络总吞吐量。
麵嚮單信源異構信宿網絡，研究瞭層間等級網絡編碼的編碼類型優化。基于遺傳算法，提齣瞭一種最優編碼類型的快速搜索方案。該方案充分攷慮瞭信源輸齣鏈路上進行的層間等級網絡編碼的編碼類型對整箇網絡傳輸性能的影響，將網絡總吞吐量作為評價編碼類型優劣的標準，設計瞭符閤層間等級網絡編碼本質特性的遺傳操作。實驗結果錶明，與分層組播網絡編碼和基于現有啟髮式算法的層間等級網絡編碼相比，基于本文方案實現的層間等級網絡編碼能夠為單信源異構信宿網絡穫得更高的網絡總吞吐量。
면향단신원이구신숙망락，연구료층간등급망락편마적편마류형우화。기우유전산법，제출료일충최우편마류형적쾌속수색방안。해방안충분고필료신원수출련로상진행적층간등급망락편마적편마류형대정개망락전수성능적영향，장망락총탄토량작위평개편마류형우렬적표준，설계료부합층간등급망락편마본질특성적유전조작。실험결과표명，여분층조파망락편마화기우현유계발식산법적층간등급망락편마상비，기우본문방안실현적층간등급망락편마능구위단신원이구신숙망락획득경고적망락총탄토량。
The coding type optimization of the interlayer hierarchical network coding for singlesource heterogeneousreceivers networks was investigated. Based on the genetic algorithm, a strategy for fast searching the optimum coding type was proposed. This strategy emphasizes the optimization of the coding types on the outgoing links of the source node, and takes the maximization of the overall network throughput as the optimization objective. Special genetic processes were designed according to the characteristics of interlayer hierarchical network codes. The experimental results show that compared to the layered multicast network coding and the interlayer hierarchical network coding using the existing heuristic method, the interlayer hierarchical network coding using the proposed optimization strategy can achieve the higher overall network throughputs for singlesource heterogeneousreceiver networks.
