关键词: 网络编码, 码转发, 重叠传输, 平均互信息, 可靠性

Abstract: Amplify-and-forward protocol at relay node is adopted in Overlapped Transmission scheme for Analog Network Coding（ANC-OT）, and the propagation of measurement noises can’t be avoided. To solve this problem, overlapped transmission scheme for network coding with decode-and-forward protocol is proposed in this paper, in which whether to forward the source signals is determined by the decoding results at the relay node. Theoretical analysis shows that the proposed scheme outperforms ANC-OT in the average mutual information and reliability. Simulation results demonstrate the validity of the theoretical analysis.

Key words: network coding, decode-and-forward, overlapped transmission, average mutual information, reliability