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鉴于FSK在目前仍具有较高的实用价值 ,且存在着改进的余地 ,该文根据误码率的定义及其几何意义 ,给出了一种对传统FSK相干解调器在有色高斯噪声(ACGN)信道条件下的改进方法 ,导出了新解调器结构 ,并进行了理论分析与计算机仿真试验 ,其所获得的结果均证明该解调器在加性高斯白噪声 (AWGN)信道条件下与传统FSK相干解调器的误码性能相同 ;在ACGN信道条件下其误码性能优于传统FSK相干解调器
In view of the high practical value of FSK and the room for improvement, according to the definition of BER and its geometric significance, this paper presents a new method of analyzing the performance of traditional FSK coherent demodulator in colored Gaussian noise (ACGN ) Channel, the structure of the new demodulator is derived, and theoretical analysis and computer simulation are carried out. The results obtained show that the demodulator is compatible with AWGN channel The traditional FSK coherent demodulator has the same bit error performance; its bit error performance is better than the traditional FSK coherent demodulator under ACGN channel conditions