High Spectral Efficient Bi-Directional Successive Relaying Technique

doi:10.13190/jbupt.200901.10.yangb

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2009, Vol. 32 ›› Issue (1): 10-13.doi: 10.13190/jbupt.200901.10.yangb

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High Spectral Efficient Bi-Directional Successive Relaying Technique

Received:2008-06-04 Revised:2008-09-29 Online:2009-01-28 Published:2009-01-28

Abstract

Abstract:

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 bi-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.

Key words: wireless multi-hop network, bi-directional relaying, spectral efficiency, physical network coding

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High Spectral Efficient Bi-Directional Successive Relaying Technique

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