结合OFDM 与协作网络编码，在频率选择性衰落信道中提出了一种正交频分复用-合作模拟网络编码(orthogonal frequency division multiplexing-cooperative analog network coding, OFDM-CANC) 方案. 采用网络编码提高协作中继系统的频谱有效性，同时以OFDM 的抗频率选择性衰落特性改善信道衰落对协作网络编码
性能的影响，并进一步提出一种基于此方案的最优系统功率分配策略. 理论分析和仿真分析表明，所提方案可改善信道的频率选择性衰落.
Physical layer network coding is a promising technique for further improving spectral efficiency and network capacity of cooperative relay systems. OFDM is an efficient way to combat selective channel fading.In view of that, an orthogonal frequency division multiplexing-cooperative analog network coding (OFDMCANC)scheme is proposed, which uses network coding to improve the system spectral efficiency, and uses OFDM to cope with channel distortion. An optimal system power allocation method based on the scheme is also presented. Theoretical analysis and simulation results show that the proposed scheme can improve frequency selective fading of the channel.
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