| Reduction effect of SLM on the PAPR in MC-CDMA system |
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| 作者姓名： | Yan Biao Yang Juan & Li MingColl. of Information Engineering Yangzhou Univ. Yangzhou P. R. China |
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| 作者单位： | Yan Biao，Yang Juan & Li MingColl. of Information Engineering，Yangzhou Univ.，Yangzhou 225009，P. R. China |
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| 基金项目： | ThisprojectwassupportedbytheInternationalScienceTechnologyCooperativePlannedProjectofJiangsuProvince(BZ2001036). |
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| 摘 要： | 1.INTRODUCTION Asanewmulticarriermultiple accesscommunication method,themulticarrierCDMA(MC CDMA)based onthecombinedschemeofCDMAandOFDM,has manyadvantages,includinghigherfrequencyeffi ciency,fittinghigh speeddatatransmissionandbet terabilityofcombatingmultipathfading.Itislikely tobecomethemultiple accessmethodusedinthe fourthgenerationmobilecommunicationsystem1～4].However,sincetheMC CDMAsystemusesthe OFDMmodulationmethod,itinheritsinevitablythe problemonthehigherpeak averagep…
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Reduction effect of SLM on the PAPR in MC-CDMA system |
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| Yan Biao,Yang Juan & Li MingColl. of Information Engineering,Yangzhou Univ.,Yangzhou ,P. R. China.Reduction effect of SLM on the PAPR in MC-CDMA system[J].Journal of Systems Engineering and Electronics,2005,16(4). |
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| Authors: | Yan Biao Yang Juan Li Ming |
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| Institution: | Coll. of Information Engineering, Yangzhou Univ., Yangzhou 225009, P. R. China |
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| Abstract: | The model of the MCCDMA system using selective mapping (SLM) is analyzed and the upper bound of the peakaverage power ratio (PAPR) in the system is derived. For the PAPR distribution and the connection between the PAPR and the number of users in the MCCDMA system using SLM, the simulations are given based on several phase sequences in SLM.The simulation results show that when random sequences, ShapiroRudin sequences or Golay complementary sequences are selected as the phase sequences in SLM, SLM has obvious effect on the PAPR reduction in MCCDMA system and the system PAPR nearly maintains constant as the number of users varies. The maximal PAPR in the MCCDMA system using SLM(10 users)is about 6.3 which is 3.3 less than that in the common MCCDMA system (without SLM). |
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| Keywords: | multicarrier CDMA selective mapping peakaverage power ratio phase sequences |
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