期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

基于扩频技术降低OFDM信号峰值功率并改善信噪比的方法 被引量：1

Method of reducing peak power of OFDM signal and improving SNR based on spread spectrum technique
在线阅读 下载PDF
导出
摘要 正交频分复用(orthogonal frequency division multiplexing,OFDM)技术具有频带利用率高、抗多径干扰能力强等优势,但具有较高的峰值功率是限制其应用的一个主要问题。针对OFDM信号具有高峰值,提出一种新型的降低OFDM信号峰值功率的方法。该方法基于混合信号扩频技术,将OFDM时域信号分解为若干段,其中有一段为连续信号,其余几段为离散信号,这些信号经交织后发送。在接收端,提出新的部分信号恢复法对信号解交织和重新组合。仿真表明,该方法能够有效地降低OFDM信号的峰值功率,同时可以获得扩频处理增益,从而改善系统的误码性能。 The Orthogonal frequency division multiplexing （OFDM） technology has the advantages of high bandwidth efficiency, resistance to multipath interference and so on. But its higher peak power is a major prob- lem. A new mix signal spread spectrum technique is suggested to reduce the peak power of OFDM signals. By means of the technique, the time domain signals are divided into one continuous part and several discrete parts and sent out after interleaving. A partial signal restoration method is proposed to restore the signals in the re- ceiver. Simulation results show that the peak power is decreased and the processing gain of the system can be gotten, thus improving the performance of the bit error ratio .
作者 赵迎新 吴岳 吴虹
机构地区 南开大学信息技术科学学院
出处 《系统工程与电子技术》 EI CSCD 北大核心 2012年第10期2147-2151,共5页 Systems Engineering and Electronics
基金 中央高校基本科研业务费专项基金(65121011)资助课题
关键词 正交频分复用 扩频 峰值功率 信噪比 orthogonal frequency division multiplexing（OFDM） spread spectrum peak power signal-to- noise ratio （SNR）
分类号 TN914.4 [电子电信—通信与信息系统]
  • 相关文献

参考文献14

  • 1Da CostaP F, ScoralickFSO, DeCamposFPV, etal. Alow lost OFDM based modulation schemes for data communication in the passband frequency[C]//Proc, of the IEEE International Symposium on Power Line Communications and Its Applica- tions, 2011:424-429.
  • 2Jiang Y. New companding transform for PAPR reduction in OFDM[J]. IEEE Communications Letter's, 2010, 14(4) :282 - 284.
  • 3Wang C L, Ku S J, Yang C J. A low-complexity papr estimation scheme for ofdm signals and its application to SLM-based PAPR reduetion[J]. IEEE Journal on Selected Topics in Signal Pro- cessing, 2010, 4(3) : 637 - 645.
  • 4Wong K T, Wang B, Chen J C. OFDM PAPR reductin by switching null subcarriers and data-subcarriers[J]. Electronic Letters, 2011, 47(1): 62-63.
  • 5Ghassemi A, Gulliver T A. A low-complexity PTS-based radix FFT method for PAPR reduction in OFDM systems[J]. IEEE Trans. on Signal Processing, 2008, 56(3) :1161 - 1165.
  • 6张凡,邓建国,李巍.一种降低OFDM峰均比的编码方法[D],西安:西安交通大学,2005.
  • 7Sumithra M G, Sarumathi M. Comparative analysis of PAPR re- duction techniques for multicarrier systems[C]//Proc, of the International Conference on Computer Communication and In- formatics, 2012: 1 - 5.
  • 8Sun E C, Yang R Z, Si P B. Raised cosine-link companding scheme for peak-to-average power ratio reduction of SCFDMA signals[C] // Proc. of the Global Mobile Congress, 2010:1 -5.
  • 9Muller S H, Huber J B. OFDM with reduced peak to-average power ratio by optimum combination of partial transmit se- quences[J]. Electronics Letters, 1997, 33(5) :368-369.
  • 10叶斌.降低OFDM峰均比的无边信息传输低复杂度PTS算法[J].无线通信技术,2011,20(2):6-10. 被引量：1

二级参考文献7

  • 1Giannopoulos, Th. , & Paliouras, V. Low - power maximum magnitude computation for PAPR reduction in ofdm transmitters. In 16th intematlonal workshop on power and timing modeling, optimization and simulation[ Z ]. PAT- MOS 2006, pp. 203 - 213.
  • 2Hieu, N. T. , Kiom, S. W. , & Ryu, H. G. PAPR reduction of the low complexity phase weighting method in OFDM communication system[ J]. IEEE Transactions on Consumer Electronics, 2005, 51 (3), pp. 776 -782.
  • 3Cimini, L. J., & Sollenberger, N. R. Peak - to average power ratio of an OFDM signal using partial transmit sequences with embedded side information. In Global teleconference[J]. IEEE. GLOBECOM00, 2000, pp. 746 - 750.
  • 4Feng, C. C., Wu, Y. T., & Cld, C. Y. Emhedding and detection of side information for peak - to - average power ratio reduction of an OFDM signal using partial transmit sequences[ C ]. In IEEE 58th vehicular technol- ogy conference, 2003. VTC 2003 - Fall, pp. 1354 - 1358.
  • 5Muller, S. , & Huber, J. A novel peak power reduction scheme for OFDM [ C ]. In Proc. of the int. symposium on personal indoor and mobile radio communications PIM- RC 97, pp. 1090 - 1094.
  • 6Jayalath, A., & Tenamhura, C. SIaM and PTS peak power reduction of OFDM signals without side information[ J ]. IEEE Transactions on Wireless Communications, 4(5), pp. 2006 -2013. 2005.
  • 7Giannopoulos, Th. , & Paliouras, V. A low-complexity pts - based papr reduction technique for ofdm signals without transmission of side information[Z]. IEEE work- shop on signal processing systems design and implementation, 2006. SIPS 06, pp. 434 - 439.

共引文献1

同被引文献2

引证文献1

二级引证文献1

系统工程与电子技术
2012年 第10期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部