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高频谱效率的双向连续中继技术 被引量：6

High Spectral Efficient Bi-Directional Successive Relaying Techniques
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摘要 无线多跳网络中,为避免节点半双工工作模式导致的网络频谱效率(吞吐量)的损失,提出了一种基于物理层网络编码的双向连续中继技术(PNC-BSR).该技术利用物理层网络编码及多个中继节点之间的协作传输,有效地提升了无线多跳网络的频谱效率.研究结果表明,与传统中继策略及放大转发方式的双向吞吐量增强中继策略(AF BAT-relaying)相比,在高信噪比的情况下,PNC-BSR的网络吞吐量可分别提升300%和100%.该技术可充分、高效地利用网络资源. In wireless multi-hop networks, the nodes operate in half-duplex modes. This leads to a loss in spectral efficiency （throughput）. A relaying method that increases the achievable throughput by applying physical network coding over hi-directional traffic flows is proposed to avoid this loss. Such a method is termed as bi-directional successive relaying based on physical network coding （PNC-BSR）.While physical network coding significantly enhances the throughput performance of wireless multi-hop networks by embracing the wireless interference, this method will combine the cooperation among nodes and further improves network throughput. Experiments show that PNC-BSR offers a superior throughput performance under low noise levels.
作者 杨波 于宏毅 吕凌 冯强
机构地区 信息工程大学信息工程学院
出处 《北京邮电大学学报》 EI CAS CSCD 北大核心 2009年第1期10-13,28,共5页 Journal of Beijing University of Posts and Telecommunications
基金 国家自然科学基金项目(60872043)
关键词 无线多跳网络 双向中继 频谱效率 物理层网络编码 wireless multi-hop network bi-directional relaying spectral efficiency physical network coding
分类号 TN919.3 [电子电信—通信与信息系统]
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参考文献9

  • 1Ahlswede R, Ning C, Li S Y R, et al. Network information flow[J]. IEEE Trans Inform Theory, 2000, 46 (4) : 1204-1216.
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同被引文献39

  • 1Ahlswede R, Cai N, Li S Y R, et al. Network information flow[J]. IEEE Trans. Inform Theory, 2000, 46(4) :1204-1216.
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  • 4Popovski P, Yomo H. Physical network coding in two-way wireless relay channels[C]//Proc. IEEE International Conference on Communication (ICC). Glasgow: IEEE Press, 2007: 707-712.
  • 5Hao Y, Goeckel D, Ding Z, et al. Achievable rates of physical layer network coding schemes on the exchange channel[ C ]// Proc. IEEE Military Communications Conference (MILCOM). Orlando: IEEE Press, 2007 : 371-382.
  • 6Rankov B, Wittneben A. Achievable rate regions for the two-way relay channel[C]//Proc. IEEE International Symposium on Information Theory (ISIT). Seattle: IEEE Press, 2006 : 1668-1672.
  • 7Oechtering T J. Spectrally efficient bidirectional decode-and-forward relaying for wireless networks [D]. Berlin: Heinrich Hertz Institute, 2007.
  • 8Rankov B, Wittneben A. Spectral efficient protocols for half-duplex fading relay channels[J]. IEEE Journal on Selected Areas in Communications, 2007, 25(2): 379-389.
  • 9Zhang R. Characterizing achievable rates for two-path digital relaying[ C ]//Proc. IEEE International Conference on Communication (ICC). Beijing: IEEE Press, 2008: 1113-1117.
  • 10Bagheri H, Motahari A S, Khandani A K. On the Capacity of the Diamond Half-Duplex Relay Channel[ EB/OL]. [2008-5-17]. http://arxiv. org/PS_cache/arxiv/pdf/0805/0805. 2641v1. pdf.

引证文献6

二级引证文献4

北京邮电大学学报
2009年 第1期

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