期刊文献+

基于梯度投影的OFDM峰值功率控制算法研究

Gradient projection algorithm for PAPR reduction in OFDM system
下载PDF
导出
摘要 OFDM系统中的高峰值功率会引起系统误码率性能恶化和非线性失真。文中研究了一种基于星座扩展的梯度投影算法,能有效地对OFDM系统中的高峰值功率进行控制。该算法采用一个在数据上呈现多零的预限幅向量,大大减小系统进行傅里叶变换时的计算量。仿真结果证明,梯度投影算法在保持峰值功率控制性能的同时,有效地加快了收敛速度,显著地降低算法的计算复杂度。 High PAPR leads to bit error rate degradati improved gradient projection algorithm based on conste in this paper. The clipped vector which consists of lots on and nonlinear distortion in OFDM system. An llation extension is proposed to solve the problem of zeros and few data reduces the computation of FFT greatly. The simulation results demonstrate that the proposed gradient projection algorithm can provide favorable PAPR reduction effectively with lower computational complexity and faster convergence speed.
作者 罗浩
出处 《信息技术》 2013年第10期58-61,共4页 Information Technology
基金 江苏省产学研基金资助项目(BY2009101)
关键词 峰值功率 星座扩展 梯度投影 OFDM PAPR constellation extension gradient projection OFDM
  • 相关文献

参考文献8

  • 1Bingham JAC. Multicarrier Modulation for Data Tran:An idea whose Time has Come [J]. IEEE. Comm. Magazine, May. 1990, 28:5 - 14. 被引量:1
  • 2Seung Hee Han, Jae Hong Lee. An overview of peak-to-average power ratio reduction techniques for multicarrier transmission [ J ]. IEEE Wireless Communications, 2005, 12(2) :56 -65. 被引量:1
  • 3Jayalath ADS, Tellambura C. SLM and PTS peak-power reduction of OFDM signals without side information [J]. IEEE Transactions on Wireless Communications, 2005, 4 (5) :2006 - 2013. 被引量:1
  • 4Kou Y J, Lu WS. A New Peak-to-Average Power-Ratio reduction al- gorithm for OFDM systems via constellation Extension [ J ]. IEEE Transactions on Wireless Communications, 2007, 6 (5) : 105 - 108. 被引量:1
  • 5Krongold BS, Jones DL. PAR Reduction in OFDM via Active Con- stellation Extension [ J ]. IEEE Transactions. On Broadcasting, 2003, 49(3) :258 -268. 被引量:1
  • 6Brian S Krongold, Douglas L Jones. An Active-Set Approach for OFDM PAR Reduction via Tone Reservation [J]. IEEE. Trans. on Signal Prec. , Feb. 2004, 52(2) :495 -509. 被引量:1
  • 7Luo Hao, Li Zhou. Optimized Gradient Projection for PAPR Reduc- tion of OFDM signals [ C ]. 4th IEEE International Conference on Broadband Network & Multimedia Technology, 2011 : 118 - 121. 被引量:1
  • 8Li Zhou, Hao Luo. An effective constellation extension method for PAPR reduction in OFDM system[ C]. IEEE International Symposium on Signals, Systems, and Electronics, 2010,1:220- 223. 被引量:1

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