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一种机会空时协作网络编码及其性能分析 被引量：2

Performance analysis of an opportunistic space-time-coded cooperative network coding
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摘要 本文提出了一种机会空时协作网络编码(OST-CNC,opportunistic space-time-coded cooperative network coding),该技术将协作分集技术和网络编码技术有机结合,能够克服无线信道衰落、提高系统资源利用率和网络吞吐。针对间隔两跳的链状网络中进行端到端信息交换的情形,分析了OST-CNC的中断性能和获取的网络编码增益,结果表明:相对于传统的数据交互策略,机会空时协作网络编码在获得全分集(获得的分集阶数为参与协作的节点数)的同时,也获得了4/3倍的渐近网络编码增益,由于机会路由的形成,OST-CNC的网络编码增益在中低信噪比(SNR)区域更为突出。 An opportunistic space-time-coded cooperative network coding （OST-CNC） is proposed, which combats channel fading and improves resource efficiency and network throughput. Focusing on the information exchange in two-hop chain network, outage performance and network coding gain of OST-CNC are analyzed. The numerical results show that in contrast to traditional strategies full diversity （i.e. K-order diversity in case of K relay nodes） and the 4/3 times of asymptotical network coding gain are both achieved through OST-CNC. And because of the opportunistic routing the network coding gain in the low and middle SNR regime is more considerable.
作者 吕凌 于宏毅 张少波
机构地区 解放军信息工程大学信息工程学院
出处 《电路与系统学报》 CSCD 北大核心 2008年第4期139-143,148,共6页 Journal of Circuits and Systems
基金 国家发改委CNGI示范工程课题(CNGI-04-10-1D) 河南省自然科学基金资助课题(SP05ZR23069)
关键词 协作分集 网络编码 中断概率 网络编码增益 无线多跳网络 cooperative diversity network coding outage probability network coding gain wireless multi-hop network
分类号 TN919.3 [电子电信—通信与信息系统]
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参考文献12

  • 1Laneman J N, Tse D N C, G W Wornell.Cooperative Diversity in Wireless Networks: Efficient Protocols and Outage Behavior [J]. IEEE Trans. Inform. Theory, 2004, 50(12): 3062-3080.
  • 2Laneman J N, Wornell G W. Distributed Space-Time-Coded Protocols for Exploiting Cooperative Diversity In Wireless Networks [J]. IEEE Trans. Info. Theory, 2003, 49(10): 2415-2425.
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同被引文献15

  • 1Laneman J N, Wornell G W. Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks [J]. IEEE Trans. Inform. Theory, 2003, 49(10): 2415-2425.
  • 2Ahlswede R, Cai N, Li S-Y R, et al. Network'information flow [J]. IEEE Trans. Inform. Theory, 2000, 46(4): 1204-1216.
  • 3Peng C, Zhang Q, Zhao M, et al.. On the performance analysis of network-coded cooperation in wireless networks [A]. Proc. IEEE 26th International Conference on ComputerCommunications (INFOCOM) [C]. Ancharage, AK. 2007. 1460-1468.
  • 4Peng C, Zhang Q, Zhao M, Yao Y. SNCC: A Selective Network-Coded Cooperation Scheme in Wireless Networks [A]. In the ICC 2007 proceedings [C]. 2007.
  • 5Alamouti S M. A simple transmit diversity technique for wireless communications [J]. IEEE J. Select. Areas Commun., 1998, 16(8): 1451-1458.
  • 6Wang T, Giannakis G B. Complex field network coding for multiuser cooperative communications [J]. IEEE Journal on Selected Areas in Communications, 2008, 26(3): 561-571.
  • 7Li J, Chen W. Physical layer network coding for wireless cooperative multicast flows [J]. IEICE Traus.Commu., 2009, E92-B(8): 2559-2567.
  • 8Sezginer S, Sari H, Biglieri E. On high-rate full-diversity 2 x 2 space-time codes with low-complexity optimum detection [J]. IEEE Transactions on Communications, 2009, 57(5): 1532-1541.
  • 9Vucetic B, Yuan J. Space-Time Coding [M]. Chichester: John Wiley & Sons Ltd, 2003.76-77.
  • 10Proakis John G. Digital communications [M]. Fourth Edition, McGraw-Hill College, 2000.818-819.

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电路与系统学报
2008年 第4期

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