一种新的FSK最佳相干解调器
OPTIMAL COHERENT DETECTION OF FSK SIGNALS WITH IMBALANCE AMPLITUDES IN THE PRESENCE OF COLORED GAUSSIAN NOISE
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摘要: 本文讨论在信号各频率振幅受到的衰减不一致并存在有色加性高斯噪声(IGDF-ACGN)信道条件下,FSK信号的最佳相干解调问题。基于矢量表示系统模型的方法,导出了最佳解调器的结构。从理论分析和计算机模拟实验结果都证明了所导得的最佳解调器,不仅在IGDF-ACGN信道条件下是最佳的,而且在加性高斯白噪声(AWGN)信道条件下也是最佳的。文中还导出了相应的误码率公式,给出了误码率数值计算和计算机模拟曲线。Abstract: The problem of optimal coherent detection of frequency-shift keying (FSK) signals transmitted over an additive colored Gaussian noise channel with imbalance gains in different frequencies(IGDF-ACGN channel) is studied. The structure of the optimal coherent detector is derived. Theoretical analysis and computer simulation results show that the detector is optimal in either additive colored Gaussian noise environment or additive white Gaussian noise environment.
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Van Tress H L. Detection,Estimation,and Modulation Theory(Part I).New York：John Wiley and Sons Inc．1968，287-297.[2]许树声. 信号检测与估计．北京：国防工业出版社，1985年，第二章．[3]Brown J L. Detection of a known signal in colored Gaussian noise-A new coordinate approach. IEEE Trans.on Information Theory，1987,IT-33：(2)：296-298.[4]刘国岁.随机信号理论与应用．北京：兵器工业出版社，1992年，2．4节．[5]Simon M K，Hinedi S M，Lindsey W C．Digital Communication Teclmiques-Signa Design and Detection．New Jersey：Prentice-Hall,Inc．1995：235-260．[6]Piece J N.Theoretical diversity improvement in frequency-shift keying[J].Proc.IRE.1958,46(5):903-910[7]Vitetta G M：et al. Optimal noncoherent detection of FSK signals transmitted over linearly time selective Rayleigh fading channels.IEEE Trans.on Commun.,1997,COM-45(11):1417-1425.[8]Hara S：et al.A novel FSK demodulation method using short-time DFT analysis for LEO satellite communication systems.IEEE Trans,on Vchicular Technology:1997,46(3):625-633.[9]DAmours C，et al.MFSK-based modulations for Hybrid DS/FH-CDMA systems operating in slowly Rayleigh fading channels.IEEE Trans．On Vehicular Technology,1997：46(3)：615-624[10]张尧庭，方开泰. 多元统计分析引论．北京：科学出版社，1997年8月，第二章. -
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