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运用卷积码降低峰均比的一种新方法 被引量:1

A new scheme to reduce PAPR in OFDM system using convolutional codes
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摘要 正交频分复用(OFDM)是一种高效的传输技术,它有着很高的比特速率,并能抵抗符号间干扰(ISI)。然而,过高的峰均比(PAPR)一直是影响OFDM系统性能的重要因素。本文将卷积码与传统的选择性映射(SLM)方法结合起来,通过插入比特标签,提出了降低峰均比的一种新方法。仿真结果表明,新方法可以大大降低峰均比。 Orthogonal Frequency Division Multiplexing (OFDM) is an efficient transmitting technology which has high bit rate and resistance to Intersymbol Interference (ISI). However, high Peak-to-Power Ratio (PAPR) is always a serious problem which debases the performance of OFDM system very much. By inserting bit labels, we combine convolutional code and traditional selective mapping (SLM), and propose a novel scheme to reduce PAPR. The simulation results show that the new scheme can reduce PAPR greatly.
出处 《电路与系统学报》 CSCD 北大核心 2008年第4期104-106,共3页 Journal of Circuits and Systems
基金 国家自然科学基金项目(60372030) 国家留学回国基金项目(教外司留[2003]406) 山东省自然科学基金重点项目(Z2003G02) 东南大学移动通信国家重点实验室开放课题(A2005010) 西安电子科技大学国家重点实验室开放课题(ISN7-05)
关键词 卷积码 选择性映射 峰均比 互补累积分布函数 convolutional code SLM PAPR CCDF
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参考文献11

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同被引文献7

  • 1江涛.新的低复杂度降低OFDM信号峰均功率比的压缩扩张技术[J].电子学报,2005,33(7):1218-1221. 被引量:8
  • 2张琛,付耀文,张尔扬.QAM-OFDM卫星通信系统PAPR抑制方法研究[J].通信学报,2006,27(8):67-72. 被引量:7
  • 3Kyeongeheol Yang, Seok-Il Chang. A novel scheme to reduce peak-to-average power in OFDM based on standard arrays of liner block codes[C]//International Symposium on Information Theory, June 29-July 4, 2003, Yokohama, Kanagawa, Japan. Piscataway, NJ: IEEE Press, 2003: 8.
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  • 6Takahiro Masakawa, Hideki Ochiai. Design of Reed-Solomon codes for OFDM systems with clipping and filtering [C]//IEEE Wireless Communications and Networking Conference, March, 11- 15, 2007, Hongkong. Piscataway, NJ: IEEE Press, 2007:1 361-1 366.
  • 7杨伟超,武林俊,黄杰,扈小丽.OFDM系统降低峰均功率比的研究[J].现代电子技术,2008,31(8):73-74. 被引量:4

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