类正弦VMSK调制的扩频技术  

The Spread Spectrum Technique of Sine-like VMSK Modulation

作　　者：唐燕[1] 殷奎喜[1] 

机构地区：[1]南京师范大学物理科学与技术学院,江苏南京210097

出　　处：《金陵科技学院学报》2007年第3期31-33,共3页Journal of Jinling Institute of Technology

基　　金：地理信息科学江苏省重点实验室开放基金资助(JK20050304)

摘　　要：介绍了一种类正弦VMSK调制的扩频技术,利用直扩系统在抗噪方面的优势,从而大大提高了系统的性能。通过比较类正弦VMSK信号与MSK信号的功率谱密度,论证类正弦VMSK调制的超窄带性。最后在加性高斯白噪声(AWGN)信道中的模拟仿真,其结果说明了此技术的优越性。In this paper, a kind of spread spectrum technique of sine-like VMSK modulation is intro- duced. We use the advantage of the DS-CDMA on reducing the bit error rate and improve performances of the system. By comparing the pdf of MSK signal and sine-like VMSK signal, it is proved that the sine-like VMSK modulations have high bandwidth efficiency. At last we discuss performances of the system on an additive white Gaussian noise （AWGN） channel which prove the superiority of the technique.

关 键 词：VMSK调制 扩频 解调 误码率 

分 类 号：TN919.6[电子电信—通信与信息系统]