期刊文献+

OFDM:4G中的OFDM关键技术 被引量:2

OFDM:Key Technique of OFDM in 4G
下载PDF
导出
摘要 OFDM(OrthogonalFrequencyDivisionMultiplexing)是未来4G中的关键技术之一。OFDM的各个子载波存在正交性,极大的利用了频谱资源,在一定程度上解决了未来频谱资源紧张的问题;OFDM有良好的抗码间干扰能力,能够适应未来无线通信无失真高速传播的要求;OFDM能用FFT/IFFT来实现,灵活多变,因而能够满足无线通信系统中的业务要求。本文分析了OFDM的基本原理和性能及FFT/IFFT实现;最后介绍了以OFDM为基础的三种多载波CDMA方式,并给出了简单比较。 OFDM will be the key technique in 4G.OFDM features its every individual subcarrier having orthogonol nature of making use of frequency resources to full extent,which solves the problem on lackness of frequence resources to a certain degree.So OFDM has good performance in resisting interference and is able to meet the need of future wireless high speed transmission without any distortion.OFDM can be realized through FFT/IFFT,and be made flexible,changeable and satisfactory with business requirement in radio communication.The basic principle,performance and FFT/IFFT realization are analyzed.Finally,three kinds of multicarriers~′CDMA modes are introduced on the basis of OFDM,with simple comparisions among the three proposed.
出处 《辽宁工学院学报》 2003年第6期4-6,共3页 Journal of Liaoning Institute of Technology(Natural Science Edition)
基金 国家自然科学基金资助研究课题(项目批准号:90104016)。
关键词 OFDM 4G 子载波 频谱资源 抗码间干扰能力 FFT/IFFT 无线通信 OFDM ISI ICI FFT/IFFT multicarrier CDMA
  • 相关文献

参考文献4

  • 1L. T. Cimini. Analysis and simulation of a digital mobile channel using orthogonal frequency division multiplexing [J]. IEEE Trans. On Commu. 1985;33(6).
  • 2M. Russell, G. L. Stuber. Interchannel interference analysis of OFDM in a mobile environment [J]. IEEE VTC. 1995, (6).
  • 3李建东 杨家玮.个人通信[M].北京:人民邮电出版社,1999..
  • 4纪红,佟学俭,郝建军,乐光新.OFDM:适合于未来移动通信系统的解决方案[J].无线电工程,2002,32(7):17-20. 被引量:4

二级参考文献4

  • 1[1]L.T. Cimini. Analysis and simulation of a digital mobile channel using orthogonal frequency division multiplexing, IEEE Trans. on Commun. 1985;33(6), 665-675
  • 2[3]M. Russell, G.L. Stuber. Interchannel interference analysis of OFDM in a mobile environment,IEEE VTC. 1995; (6), 820-824
  • 3[4]R.W. Bauml, R.F.H. Fischer. Reducing the peakto-average power ratio of multicarrier modulation by selected mapping, Electronics Letters,1996; 32(22), 2056-2057
  • 4[5]S.H. Muller, J.B. Huber. OFDM with reduced peakto-average power ratio by optimum combination of partial transmit sequences, Electronics Letters, 1997; 33(5), 368-369

共引文献8

同被引文献6

引证文献2

二级引证文献7

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部