[1]龚晓晖,万慧琳,薛晶晶,等.一种新型的IJF-MSK调制技术[J].南京师范大学学报(工程技术版),2006,06(03):023-25.
 GONG Xiaohui~,WAN Huilin~,XUE Jingjing~,et al.A Modified IJF-MSK Modulation Technique[J].Journal of Nanjing Normal University(Engineering and Technology),2006,06(03):023-25.
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一种新型的IJF-MSK调制技术
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南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
06卷
期数:
2006年03期
页码:
023-25
栏目:
出版日期:
2006-09-30

文章信息/Info

Title:
A Modified IJF-MSK Modulation Technique
作者:
龚晓晖1 万慧琳1 薛晶晶2 殷奎喜1
1. 南京师范大学物理科学与技术学院, 江苏南京210097;
2. 南京师范大学中北学院, 江苏南京210046
Author(s):
GONG Xiaohui~1WAN Huilin~1XUE Jingjing~2YIN Kuixi~1
1.School of Physical Science and Technology,Nanjing Normal University,Nanjing 210097,China;2.School of Zhongbei,Nanjing Normal University,Nanjing 210046,China
关键词:
IJF-OQPSK MSK IJF编码
Keywords:
IJF-OQPSK M SK IJF code
分类号:
TN941.4
摘要:
MSK调制技术中,由于其相位路径在转换时刻的斜率不连续,影响了已调信号频谱的衰减速度,针对这一缺陷引入IJF-OQPSK,使得相位路径平滑,频谱特性有所提高.在对MSK和IJF-OQPSK两种调制进行分析比较的基础上提出了一种新型的IJF-MSK调制技术,即对数字基带信号(NRZ)进行IJF编码,用升余弦脉冲构成基带随机信号,再进行MSK调制,仿真结果表明:IJF-MSK调制的频谱特性明显优于前面两种调制,旁瓣衰减速度快MSK及IJF-OQPSK 20 dB以上.
Abstract:
InM SK modu lation, due to the d iscontinuous slope dur ing the sw itch tim e of the phasic path, the dropp ing veloc ity o f them odu la tion spectrum is a ffected, and IJF-OQPSK is introduced to solve the lim itation, sm ooth the phasic path and im prove the spec trum. This pape rm akes a com par ison betw een both the m odulations and introduces a new m odulation nam ed IJF-MSK, that is, code the dig ita l base-band signa lw ith IJF, then modu late it w ithM SK. The simu lation proves that com pared w ithMSK and IJF-OQPSK, it has a better spectrum, the dropping ve locity of the secondary pe tal is low er than 20 dB.

参考文献/References:

[ 1] 樊昌信, 张甫翊. 通信原理[M ]. 5版. 北京: 国防工业出版社, 2001.
FAN Changx in, ZHANG Fuy .i Theo ry o f Communication[M ] . 5th ed. Be ijing: Na tiona l Defense Publish ing Com pany, 2001. ( in Chinese)
[ 2] 祁玉生, 邵世祥. 现代移动通信系统[M ]. 北京: 人民邮电出版社, 1999.
Q IYusheng, SHAO Shix iang. M odernM obile Comm un ica tion System [M ] . B eijing: People Post and Te lecommunication Publish ing Company, 1999. ( in Chinese)
[ 3] 安振庄, 言华. 数字基带IJF编码及其实现[ J]. 通信学报, 1997, 18( 1): 72-83.
AN Zhenzhuang, YAN Hua. IJF coding and rea liza tion on dig ital baseband[ J]. Jouranal of China Institute o f Commun ica tion, 1997, 18( 1): 72-83. ( in Chinese)
[ 4] LIN Fuhua, SONG T iecheng, JIAN Shao jie. A m odified IJF-OQPSK m odulation techn ique [ C] / / M ilitary Commun ications Con ference, 1993. M ICOM’93. Con ferenceRecord Commun ica tions on theM ore, IEEE, 1993, 3: 944 947.

备注/Memo

备注/Memo:
基金项目: 地理信息科学江苏省重点实验室开放基金资助项目( JK20050304 ) .
作者简介: 龚晓晖( 1982-) , 硕士研究生, 主要从事移动通信等方面的学习和研究. E-m ail:e- er@ s ina. com
通讯联系人: 殷奎喜( 1949-) , 教授, 博士生导师, 主要从事移动通信、码分多址技术的教学与研究. E-m ail: yinku ix@i n jnu. edu. cn
更新日期/Last Update: 2013-04-29