[1]吴游,殷奎喜,赵华,等.基于复小波变换的OCWDM多载波调制系统用于DVB-T[J].南京师大学报(自然科学版),2010,33(02):38-42.
　Wu You,Yin Kuixi,Zhao Hua,et al.Multicarrier Modulation Based on Dual-Tree Complex Wavelet Transform Applied in DVB-T[J].Journal of Nanjing Normal University(Natural Science Edition),2010,33(02):38-42.
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基于复小波变换的OCWDM多载波调制系统用于DVB-T()
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《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

卷:
第33卷
期数:
2010年02期
页码:
38-42
栏目:
物理学
出版日期:
2010-06-20

文章信息/Info

Title:
Multicarrier Modulation Based on Dual-Tree Complex Wavelet Transform Applied in DVB-T
作者:
吴游1;  殷奎喜1;  赵华1;  吴勇2
1. 南京师范大学物理科学与技术学院, 江苏南京210046 2. 南京师范大学地理科学学院, 江苏南京210046
Author(s):
Wu You1; Yin Kuixi1; Zhao Hua1; Wu Yong2
1.School of Physics and Technology,Nanjing Normal University,Nanjing 210046,China 2. School ofG eography S cien ce, Nan jing Norma lU n ivers ity, Nan jing 210046, China
关键词:
二元树复小波变换;  小波复用;  多载波调制;  数字电视系统
Keywords:
dua l tree com plex w avelet transform;  w ave let d iv ision m ultiplex;  mu lticarr ier modu lation;  DVB
分类号:
TN943
摘要:
用二元树复小波变换取代OFDM中的傅立叶变换,应用于DVB系统.在DVB-T中,将OrthogonalComplex Wavelet Division Multiplex(OCWDM)多载波调制系统在高斯信道、平坦衰落信道、频率选择性信道中进行仿真.同OFDM相比较,OCWDM在高斯信道和平坦衰落信道下误码率有着明显的降低;在频率选择性信道下,OCWDM的误码率也低于OFDM.OCWDM有着很好的抗噪声和抗衰落、抗多径特性.DTCWT的小波基具有正交性,不需要循环前缀来消除码间干扰和子载波间干扰,简化了OCWDM调制过程.DTCWT可以直接通过数字滤波器实现,运算复杂度低,硬件实现简单.OCWDM在DVB系统中有着很好的应用前景.
Abstract:
Dual Tree Comp lexW ave let Transfo rm ( DTCWT) replaces DFT in OWDM app lied in DVB system. In DVB?? T, Orthogonal Comp lexW ave let Div is ionM u ltiplex ( OCWDM ) is simu lated in gauss channe,l flat fading channe l and frequency selectiv e channe.l The resu lts show tha tOCWDM has much lowe rBER com pared w ith OFDM in gauss channel and in fla t fading channe.l A lso in frequency se lective channe lOCWDM outper fo rm s OFDM. OCWDM has good deno i s ing property, an tifad ing prope rty and anti mu ltipath property. OCWDM do es not need CP to reduce ISI and ICI be cause of its orthogonality. It sim plifies m odulation steps. DTCWT can be realized by d ig ita l filters. It reduces computa tiona l com plex ity and OCWDM can be realized by hardw are eas ily. OCWDM applied in DVBT has a broad sight.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 国家863 计划- 视频G IS 关键技术研究项目( 2007AA12Z238) . 通讯联系人: 殷奎喜, 教授, 博士生导师, 研究方向: 移动通信. Email:yinkuixi@njnu. edu. cn
更新日期/Last Update: 2013-04-08