PCMA信号分离解调技术研究

摘要

The paired Carrier Multiple Access( PCMA) is a newly⁃emerged frequency re⁃use technology and the technology can efficiently increase the system capacity by rebuilding and suppressing the self⁃interference signal.The key technology lies in the estima⁃tion of the self⁃interference signal parameters.The transfer model of PCMA system is established in the paper by analyzing the cancella⁃tion principle of self⁃interference signal and the parameter estimation methods are proposed, which includes time delay estimation, frequency estimation,phase estimation and amplitude estimation.Finally,the effectiveness of the algorithms is verified by the separation demodulation simulation results and the algorithms provide the theoretical basis for practical application.%成对载波多址（ Paired Carry Multiple Access， PCMA）是一种新兴的频率重用技术，通过对自干扰信号的重构和抑制能够有效提高系统容量，其关键技术在于自干扰信号的参数估计。通过分析 PCMA 自干扰信号抵消原理，建立PCMA系统传输模型，并在此基础上提出了PCMA自干扰信号的参数估计方法，包括时延估计、频率估计、相位估计和幅度估计。对PCMA信号进行了分离解调仿真，仿真结果验证了算法的可行性。