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关于OFDM系统中抗多普勒频移的研究

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摘要 在OFDM(Orthogonal Frequency Division Multiplexing,即正交频分多路复用)系统中,由于无线信道存在时变性,在传输过程中出现无线信号的频率偏移,最为明显的就是多普勒频移,或者由于发射机载波频率与接收机本地振荡器之间存在频率偏差,都会使OFDM系统子载波之间的正交性遭到破坏,从而导致子载波间信号的相互干扰(Inter-Carrier Interference ICI),因而研究OFDM系统下的多普勒问题势在必行。
作者 陈燕
出处 《中小企业管理与科技》 2014年第33期285-286,共2页 Management & Technology of SME
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