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时变衰落信道下OFDM信号参数融合估计 被引量：3

Merging parameters estimation for OFDM signals in time-varying fading channels
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摘要 提出了一种基于代价函数实现短循环前缀正交频分复用(orthogonal frequency division multiple-xing,OFDM)信号参数融合估计与识别的算法。该算法同时利用OFDM信号循环前缀产生的自相关和循环自相关特性,同步估计有用符号时间和符号周期。首先对OFDM信号的循环自相关特性进行了深入的分析,然后构造了代价函数并讨论了时变衰落信道条件下引入循环频率的数目对代价函数的影响,最后通过计算机仿真,验证了算法的有效性。 A merging parameters estimation and identification algorithm for short cyclic prefix orthogonal frequency division multiplexing（OFDM） signals is presented based on cost function.Merging estimation of the useful symbol time and symbol duration for OFDM signals can be realized with the algorithm by using the autocorrelation and the cyclic autocorrelation simultaneously,which are generated by the cyclic prefix of OFDM signals.Firstly the characteristic of cyclic autocorrelation for OFDM signals is deeply analyzed.Then a cost function is constructed,and the effects of the cost function by introducing the number of the cycle frequency are discussed in the time-varying fading channels.Finally,the validity of the algorithm is proved by simulations.
作者 蒋清平 杨士中 张天骐 任智
机构地区 重庆大学通信与测控中心 重庆邮电大学信号与信息处理重庆市重点实验室
出处 《系统工程与电子技术》 EI CSCD 北大核心 2011年第7期1627-1632,共6页 Systems Engineering and Electronics
基金 国家自然科学基金(10776040) 重庆邮电大学青年基金(A2007-19) 重庆邮电大学移动通信技术重点实验室开放研究基金 重庆大学飞行器测控与通信教育部重点实验室访问学者基金资助课题
关键词 认知无线电 循环自相关函数 盲信号处理 正交频分复用 cognitive radio cyclic autocorrelation function blind signal processing orthogonal frequency division multiplexing（OFDM）
分类号 TN911.3 [电子电信—通信与信息系统]
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参考文献11

  • 1Mitola J, Maguire G Q. Cognitive radio:making software radios more personal[J] IEEE Personal Communications, 1999,6(4) : 13-18.
  • 2Mahmoud H, Yiicek T, Arslan H. OFDM for cognitive radio: merits and challenges[J]. IEEE Trans. on Wireless Communication ,2009,16(2) :6 - 15.
  • 3Budiarjo I, Nikookar H, Lighthart L P. Cognitive radio modulation techniques[J]. IEEE Signal Processing Magazine, 2008, 25(6) :24 - 34.
  • 4Yucek T, Arslan H. A survey of spectrum sensing algorithms for cognitive radio applications[J]. IEEE Communications Surveys & Tutorials,2009,11(1) :116 - 130.
  • 5Shi M, Bar-Ness Y, Su W. Revisiting the timing and frequency offset estimation based on cyclostationarity with new improved method[J]. IEEE Communications Letters, 2009,13 (7): 537 - 539.
  • 6Ishii H, Wornell G W. OFDM blind parameter identification in cognitive radios[C]// Proc. of the IEEE Personal, Indoor and Mobile Radio Communications ,2005:700 - 705.
  • 7Liu P, Li B B, Lu Z Y. A blind time-parameters estimation scheme for OFDM in multi-path channel [C] // Proc. of the Wireless Corn munications , Networking and Mobile Computing, 2005 : 242 - 247.
  • 8Shi M, Bar-Ness Y, Su W. Blind OFDM systems parameters estimation for software defined radio[C]// Proc. of IEEE International Symposium on New Frontiers in Dynamic Spectrum Access Networks, 2007:119 - 122.
  • 9Vueic D, Obradovic M. Spectral correlation evaluation of MSK and offset QPSK modulation[J]. Signal Processing, 1999,78 (3) :363 - 367.
  • 10Gardner W A. Cyclostationarity in communications and signal processing[M]. New York: IEEE Press, 1994 : 329 - 454.

同被引文献20

  • 1吕挺岑,李兵兵,董刚.一种多径信道下的OFDM信号盲识别算法[J].现代电子技术,2007,30(11):13-16. 被引量：15
  • 2Yong Soo Cho, Jeakwon Kim, Won Young Yang.MIMO-OFDM无线通信技术及Matlab实现[M].北京:电子工业出版社,2013.
  • 3Akmouche W.Detection of Multicarrier Modulations Using4th-order Cumulants [C]//IEEE Military CommunicationsConference,Atlantic ,USA,1999.
  • 4Yong S C,Jaekwon K著,孙锴,黄威译. MIMO-OFDM无线通信技术及MATLAB 实现[M].北京:电子工业出版社,2013.
  • 5Dobre O A,Punchihewa A,Rajan S,eta1.On the Cyclostatianafityof OFDM and Single Carrier Linearly DigitallyModulated Signals in Time Dispersive Channels with Applicationsto Modulation Recognition[C]//IEEE Wireless Communicationsand Networking Conference,Las Vegas,USA,3,2008.
  • 6Kim Seonae, An l)onggeon, Ryu Heunggyoon, et al. Efficient SNR estimation in ()FDM system[C]//Proceedings of IEEE Radio and Wireless Symposium. Phoenix, USA 1EEE, 2011 =182- 185.
  • 7YongSooCho,JaekwonKim.MIMOOFDM无线通信技术及MATI,AB实现[M].孙锴,黄威,译.北京:电子工业出版社2011.
  • 8杨防,何HH峰,潘长勇.OFDM原理与标准通信技术的演进[M].北京:电子工业出版社,2013.
  • 9Kim Seon-ae, An Dong-geon, Ryu Heung-gyoon, et al. Efficient SNR estimation in OFDM system [C]// 2011 IEEE Radio and Wireless Symposium. Phoenix, AZ :IEEE,2011: 182-185.
  • 10杨畴,何丽峰,潘长勇.OFDM原理与标准一通信技术的演进[M].北京:电子工业出版社,2013.

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系统工程与电子技术
2011年 第7期

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