CAJ | 학술논문

针对双向中继信道，该文提出一种基于连续相位频移键控(CPFSK)调制的物理层网络编码(PNC)机制，即CPFSK-PNC。与已有的采用BPSK, QPSK等调制方式的物理层网络编码相比，该机制引入CPFSK的技术优势，提高了系统的频谱效率和功率效率。该文对瑞利衰落信道中CPFSK-PNC的物理层网络编码检测进行了研究。首先，利用CPFSK信号的记忆特性，根据最大似然准则设计了中继节点的物理层网络编码检测方案；其次，分析了信号之间最小欧氏距离并给出中继检测的平均误比特率下边界；最后，仿真验证了理论分析结果。
침대쌍향중계신도，해문제출일충기우련속상위빈이건공(CPFSK)조제적물리층망락편마(PNC)궤제，즉CPFSK-PNC。여이유적채용BPSK, QPSK등조제방식적물리층망락편마상비，해궤제인입CPFSK적기술우세，제고료계통적빈보효솔화공솔효솔。해문대서리쇠락신도중CPFSK-PNC적물리층망락편마검측진행료연구。수선，이용CPFSK신호적기억특성，근거최대사연준칙설계료중계절점적물리층망락편마검측방안；기차，분석료신호지간최소구씨거리병급출중계검측적평균오비특솔하변계；최후，방진험증료이론분석결과。
A Physical-layer Network Coding (PNC) scheme based on Continuous Phase Frequency Shift Keying (CPFSK) modulation, i.e., CPFSK-PNC, for two-way relay channels is proposed. Compared with the current schemes of BPSK or QPSK for PNC, the CPFSK-PNC scheme, by exploitating the technical advantage of the CPFSK method, has higher power and spectral efficiency. The detection for the relay receiver in the CPFSK-PNC scheme over Rayleigh fading channels is investigated. Firstly, in the light of the memory property of the CPFSK signal, the detection method for PNC at the relay based on the Maximum-Likelihood (ML) criterion is designed. Secondly, the minimum Euclidean distance is analyzed and the tight lower bound for the average bit error rate at the relay is derived. And finally, the simulation results verify the theoretical asymptotic derivations.