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OFDM系统降低峰均比方法的研究 被引量：2

Research on Peak-to-Average Power Ratio Reduction Scheme of OFDM Signal
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摘要 SLM(选择映射)技术是一种无失真降低OFDM(正交频分复用)信号峰均比的方法,它是一种很有效的方法。但是一般的SLM技术是在IFFT之后选择具有最小峰均比的序列,因此需要多个IF-FT模块,系统复杂度高。在改进的SLM技术中提出了一种基于比较序列随机性的判决算法,采用此算法可以在IFFT之前选择发送序列,从而只需要一个IFFT模块。通过仿真证明,这种判决算法可以在较小的计算量和复杂度条件下获得同原有SLM技术相同的降低峰均比性能。 SLM（Selected mapping） is an effective algorithm for the reduction of peak-to-average power ratio （PAPR） of OFDM（ Orthogonal Frequeney Division Multiplexing） signal without distortion. In general, SLM selects the transmitted sequence with minimum PAPR after IFFT,so that the system needs some IFFTs operating in parallel and is very complex. An improved SLM technique, which adopts a simpler algorithm to select the transmitted sequence before IFFT by comparing randomness of sequences, is proposed. The system adopting the improved SLM technique only needs one IFFT. So it is with lower complexity. The simulation results show that the PAPR performance of the improved SLM technique with lower complexity is the same as that of the existing selected mapping technique.
作者 何雪云 周克琴
机构地区 南京邮电大学通信工程系
出处 《南京邮电学院学报（自然科学版）》 2005年第4期36-41,共6页 Journal of Nanjing University of Posts and Telecommunications
关键词 OFDM 峰均比 SLM技术 Orthogonal Frequeney Division Multiplexing PAPR（Peak-to-average power） Selected mapping
分类号 TN919.72 [电子电信—通信与信息系统]
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参考文献21

  • 1HIDEKI O,HIDEKI I.On clipping for peak power reduction of OFDM signals[A].IEEE Global Communication Conference v2 2000[C].2000.731～735.
  • 2HIDEKI O,HIDEKI I.Performance Analysis of Deliberately Clipped OFDM Signals[J].IEEE Trans on Communications,2002,50(1):89～101.
  • 3MAY T,ROHLING H.Reducing the peak-to-average power ratio in OFDM radio transmission systems[A].VTC'98[C].1998.2474～2478.
  • 4HYUNG J K,SEONG C C,HYUN S,et al.Adaptive clipping technique for reducing PAPR on OFDM systems[A].VTC'2003-Fall[C].2003.3:1478～1481.
  • 5GOLAY M J E.Complementary Series[J]. IRE Trans on Information Theory, 1961, IT-7:82～87.
  • 6TSENG C-C,LIU C L.Complementary Sets of Sequences[J]. IEEE Trans on Information Theory, 1972, 18:644～652.
  • 7VAN N R.OFDM Codes for Peak-to-Average Power Reduction and Error Corretion[A]. IEEE Global Telecommunications Conference[C]. Nov 18-22,1996.740～744
  • 8LI Ying,CHU Wenbin. More Golay Sequences[J]. IEEE Trans on Information Theory, 2005,51(3):1141～1145.
  • 9WULICH D,GOLDFELD L.Reduction of Peak Factor in Orthogonal Multicarrier Modulation by Amplitude Limiting and coding[J].IEEE Trans on Communication,1999,47(1):18～21.
  • 10WILKINSON T A,JONES A E.Minimisation of the Peak to Mean Envelope Power Ratio in Multicarrier Transmission Schemes by Block Coding[A].Proc IEEE VTC'95[C]. Chicago,July 1995.825～831.

同被引文献11

  • 1WANG L Q,CHINTHA T.A simplified clipping and filtering technique for PAR reduction in OFDM sys-tems[J].IEEE Signal Processing Letters,2005,12(6):453-456.
  • 2TAO J,YANG Y,SONG Y H.Exponential companding technique for PAPR reduction in OFDM systems[J].IEEE Transactions on Broadcasting,2005,51(2):244-248.
  • 3KAI-UWE S.On the peak-to-mean envelope power ratio of phase-shifted binary codes[J].IEEE Transac-tions on Communications,2008,56(11):1816-1823.
  • 4DAYAL P V,MAHESH K.Maximal diversity algebraic space-time codes with low peak-to-mean power ratio[J].IEEE Transactions on Information Theory,2005,51(5):1691-1708.
  • 5STEPHANE Y,LE G,BOON K K,et al.A novel se-lected mapping technique for PAPR reduction in OFDM systems[J].IEEE Transactions on Communi-cations,2008,56(11):1775-1779.
  • 6AL-SAMAH S S,LE GOFF S Y,SHARIF B S,et al.A novel OFDM PAPR reduction using selected map-ping without explicit side information[C]//IEEE19 th International Symposium on Indoor and Mobile Radio Communications.[S.l.]:[s.n.],2008:1-5.
  • 7WANG C L,OUYANG Y.A low-complexity selected mapping scheme for peak-to-average power radio reduction in OFDM systems[J].IEEE Transactions on Signal Processing,2005,53(12):4652-4660.
  • 8WANG S H,LI C P.A low-complexity PAPR reduction scheme for SFBC MIMO-OFDM systems[J].IEEE Sig-nal Processing Letters,2009,16(11):941-944.
  • 9YANG L,SOO K K,SIU Y M,et al.A low complexity selected mapping scheme by use of time domain se-quence superposition technique for PAPR reduction in OFDM system[J].IEEE Transactions on Broadcast-ing,2008,54(4):821-824.
  • 10同济大学数学系.工程数学线性代数[M].北京:高等教育出版社,2003:62-66.

引证文献2

南京邮电学院学报（自然科学版）
2005年 第4期

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