QQ客服 官方微博 反馈留言

	窄带色散系统的群时延与包络时延的关系
	王建武 ; 冯正和 ; Wang Jian-wu ; Feng Zheng-he
	2016-03-30 ; 2016-03-30
关键词	信号处理 色散 群时延 相关时延 滤波器 Device-to-Device(D2D) communication Resource allocation Integer programming Canonical duality TN911.3
其他题名	The Relationship between the Group Delay and Envelope Delay of a Narrow-band Dispersive System
中文摘要	该文探讨了调制信号经过色散窄带系统时,群时延与相关时延之间的关系,分析了色散对系统时延校准的影响。当信号经过系统时,信号包络的时延主要由上升沿与下降沿的变形引起。对矩形脉冲调制、三角脉冲调制、余弦脉冲调制以及线性调频脉冲调制的研究表明,相关时延不等于系统在载波频率点的群时延,近似为群时延的加权平均,加权值为信号频谱分布与系统幅度响应的乘积。利用群时延对系统相关时延校准时,系统相位响应的线性度越好,校准精度越高。; In this paper,the relationship between the group delay and correlation delay is discussed,and the influence of dispersion on the calibration of a system is analyzed,when a modulated signal passes through a dispersive narrow-band system.The envelope delay of a modulated signal is caused by the distortion of its rising and falling edges when it passes through a system.The researches on the modulated signals,including the rectangular pulse modulation,triangular pulse modulation,cosine pulse modulation and chirp modulation,show that the correlation delay is different from the group delay of the system at the point of the carrier frequency.The correlation delay is approximate to the weighted average of the group delay,and the weighting factor is the product of the spectrum of the signal and the amplitude response of the system.When the group delay is used to calibrate the correlation delay,the linearity of the phase response of the system becomes better,the calibration is higher.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/146784]
专题	清华大学
推荐引用方式 GB/T 7714	王建武,冯正和,Wang Jian-wu,等. 窄带色散系统的群时延与包络时延的关系[J],2016, 2016.
APA	王建武,冯正和,Wang Jian-wu,&Feng Zheng-he.(2016).窄带色散系统的群时延与包络时延的关系..
MLA	王建武,et al."窄带色散系统的群时延与包络时延的关系".(2016).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。