中国激光, 2010, 37 (2): 460, 网络出版: 2010-02-03
脉冲位置宽度调制技术的功率谱性能及改进技术
A Research of PPWM Modulation Scheme′s Power Spectrum and Its Modified Scheme
光通信 脉冲位置宽度调制 脉冲宽度位置调制 功率谱 功率效率 带宽效率 optical communications pulse-position-width modulation pulse-width-position modulation power spectrum power efficiency bandwidth efficiency
摘要
通过分析L级脉冲位置宽度调制(PPWM)技术的功率谱特性,发现PPWM信号的功率在一些特定频率上具有较大分量,不利于信号的传播。对PPWM技术做出改进,提出L级脉冲宽度位置调制(PWPM)技术,在削弱功率峰值和遣散功率谱的同时,具有和PPWM技术完全相同的功率利用率、误码率和频带利用率。
Abstract
After analysis of the L-level pulse-position-width modulation (PPWM) scheme′s power spectrum,strong spectral lines in the PPWM sequence are found,which are not good for the propagation of the sequences. In this paper,the PPWM modulation scheme is modified,and a new modulation scheme,L-level pulse-width-position modulation scheme (PWPM) is proposed. This scheme lowers the peak value power,scatters the power spectrum,and at the same time has the same power efficiency,bandwidth efficiency and packet error rate as PPWM modulation scheme.
白勃, 樊养余, 原勐捷, 谭庆贵. 脉冲位置宽度调制技术的功率谱性能及改进技术[J]. 中国激光, 2010, 37(2): 460. Bai Bo, Fan Yangyu, Yuan Mengjie, Tan Qinggui. A Research of PPWM Modulation Scheme′s Power Spectrum and Its Modified Scheme[J]. Chinese Journal of Lasers, 2010, 37(2): 460.