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OFDM

于 2011-01-20 发布 文件大小:1KB
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  OFDM信道仿真,自己弄的,觉得比较不错,大家参考参考(OFDM channel simulation, get their own, and felt quite good, we refer to the reference)

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  • fangxiang
    利用matlab自己建立光栅,别且进行方向滤波,效果十分明显(Grating using matlab to establish their own, do not and the direction of filtering, the effect is very obvious)
    2010-11-17 15:38:11下载
    积分:1
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  • PAPR-Reduction2
    This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.
    2011-05-19 20:47:15下载
    积分:1
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    哥德巴赫猜想,数字系统设计答辩资料,获得了一等奖哦!(Goldbach Conjecture, digital system design reply information received first prize Oh!)
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