Physical-layer network coding (PNC) employs interactive communication among neighbor nodes by using a proper modulation-and-demodulation technique to improve the communication ability. Most traditional routing protocols in wireless network are designed to reduce or avoid signal interference but do not have the merit of the physical-layer network coding. As a result, the throughout of network can hardly be improved. In this paper we propose a routing protocol based on physical-layer network coding by introducing cross layer coordinated strategy for clustered wireless multi-hop network. Our approach can achieve better improvement of network throughput by comparing with non-coding and other existing network coding strategies.
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