基于椭圆球面波的非正弦解调方法及性能分析

摘要

为了解决基于椭圆球面波的非正弦通信系统收信端数据解调问题,提出了基于椭圆球面波的非正弦解调方法.该解调方法由相关解调器和基于最小距离检测准则的检测器组成,对解调方法的最佳性进行了证明,对理论误码率进行了推导和仿真.理论分析和仿真结果表明,在加性高斯白噪声信道和发送数据先验概率相等的情况下,基于椭圆球面波的非正弦解调方法是最佳的,该解调方法能使收信端数据正确判决概率最大,错误判决概率最小.%To solve receiver's data demodulation problem in nonsinusoial communication system which is based on Prolate Spheroidal Wave Functions (PSWF), a nonsinusoidai demodulation method is proposed. This method consists of coherent demodulator and detector which is based on minimum distance detection criteria. This demodulation method is proved to be the best. Derivation and simulation are conducted for bit error rate. Theoretical analysis and simulation results show that under the circumstance of additive white Gaussian noise channel and equaling the priori probability of sent data, the nonsinusoidal demodulation method based on PSWF is the best, and this method allows the receiver to make correct data judgment the most and incorrect data judgment the least.