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OFDM系统中相位噪声的自适应补偿技术及性能仿真 被引量：2

Adaptive Compensation Technique for Phase Noise in OFDM System and Performance Simulation
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摘要 相位噪声对正交频分复用OFDM系统的性能有着关键性影响,其产生的通用相角错误CPE会使信道失真系数逐符号旋转,因而必须采用逐符号更新信道估计值的方法。提出了一种基于判决反馈的低通滤波算法来克服CPE所产生的信道旋转并提高信道估计的性能。该方法可通过导频子载波估计CPE所产生的信道旋转,并将解调后子载波的判决值通过低通滤波的方式降低信道估计的方差。文中采用了归纳法对该算法进行了理论分析,分析结果和仿真均证明了该算法的有效性,以及在计算量,收敛性方面的优势。 Phase noise is a key issue for the performance of OFDM system.CPE generated by phase noise can make rotation of channel distortion coefficient symbol by symbol.Therefore,the value of channel estimation should be updated with the variation of the received symbols.An algorithm based on decision feedback and low pass filter was proposed in order to overcome the rotation of channel distortion,which caused by CPE,and enhance the performance of channel estimation.Pilot sub-carriers were used to estimate the rotation of channel response caused by CPE.For lower deviation,low pass filter was employed to the decision of sub-carriers after demodulation.Analysis by induction method for the proposed algorithm is available.Simulation results and analysis demonstrate advantages of this algorithm in computational complexity, convergence,and performance.
作者 张浩 陈杰 亓中瑞 邱昕
机构地区 中国科学院微电子研究所
出处 《系统仿真学报》 EI CAS CSCD 北大核心 2008年第2期534-538,共5页 Journal of System Simulation
基金 国家自然科学基金项目(60425413)
关键词 相位噪声 OFDM CPE 信道估计 判决反馈 phase noise OFDM CPE channel estimation decision feedback
分类号 TN911.4 [电子电信—通信与信息系统]
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参考文献9

  • 1Hang Jianhua, Rohling H, Zhang Ping. Analysis of ICI cancellation scheme in OFDM systems with phase noise [J]. IEEE Transactions on Broadcasting (S0018-9316), 2004, 50(2): 97-106.
  • 2Shentu J, Panta K, Armstrong J. Effects of phase noise on performance of OFDM systems using an ICI cancellation scheme [J]. IEEE Transactions on Broadcasting (S0018-9316), 2003, 49(2): 221-224.
  • 3Robertson P, Kaiser S. Analysis of the effects of phase-noise in orthogonal frequency division multiplex (OFDM) systems. [C]//1995 IEEE International Conference on Gateway to Globalization, Seattle, WA: IEEE Communication Society, 1995, 3: 1652-1657.
  • 4Nikitopoulos K, Polydoros A. Compensation schemes for phase noise and residual frequency offset in OFDM systems[C]// Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE. San Antonio, TX: IEEE Communication Society, 2001, 1: 330-333.
  • 5Zi-Wei Zheng, Zhi-Xing Yang, Chang-Yong Pan, et al. Robust phase noise suppression scheme for TDS-OFDM-based digital television terrestrial broadcasting systems [J]. IEEE Transaction on Consumer Electronics (S0098-3063), 2004, 50(2): 436-442.
  • 6Songping Wu, Bar-Ness Y A. phase noise suppression algorithm for OFDM-based WLANs [J]. IEEE Communications Letters (S1089-7798), 2002, 6(12): 535-537.
  • 7IEEE 802.11. IEEE standard for wireless LAN medium access control (MAC) and physical layer (PHY) specifications [S]. Nov.1997.
  • 8IEEE 802.16-REVd/D3-2004. Part 16: Air Interface for Fixed Broadband Wireless Access Systems [S]. 2004
  • 9吕浚哲.高效OFDM传输中的关键技术及其空时处理[M].西安:西安电子科技大学,2004.

同被引文献27

  • 1IEEE Std 802. 11--2007, IEEE standard for information technology telecommunications and information exchange between systems-local and metropolitan area networks- specific requirements-part If:wireless lan medium ac- cess control (MAC) and physical layer (PHY) specifica- tions [ S].
  • 2IEEE Std 802. 16--2009, IEEE standard for local and metropolitan area networks part 16 : air interface for broad- band wireless access systems [S].
  • 3Fettweis G, Lohning M, Petrovic D, et al. Dirty RF : a new paradigm [ J ]. International Journal of Wireless Informa- tion Networks, 2007,14 ( 2 ) : 133-148.
  • 4Wu S P, Bar-Ness Y. OFDM systems in the presence of phase noise: consequences and solutions [ J ]. IEEE Transactions on Communications, 2004,52 ( 11 ) : 1988- 1996.
  • 5Petrovic D,Rave W, Fettweis G. Effects of phase noise on OFDM systems with and without PLL:characterization and compensation [ J ]. 1EEE Transactions on Communica- tions,2007,55 (8) : 1607-1616.
  • 6Syrjala V, Valkama M, Tehamov N N, et al. Phase noise modelling and mitigation techniques in OFDM communica- tions systems [C] //Proceedings of 2009 Wireless Tele-communications Symposium. Prague : IEEE,2009 : 115-122.
  • 7Wu S P, Liu P, Bar-Ness Y. Phase noise estimation and mitigation for OFDM systems [ J ]. IEEE Transactions on Wireless Communications, 2006,5 ( 12 ) : 3616- 3625.
  • 8Dagres I, Polydoros A. Decision-directed least-squares phase perturbation compensation in OFDM systems [ J ]. 1EEE Transactions on Wireless Communications ,2009,8 (9) :4784-4796.
  • 9Zou Q Y,Tarighat A, Sayed A H. Compensation of phase noise in OFDM wireless systems [ J 1. IEEE Transactions on Signal Processing ,2007,55 ( 11 ) :5407-5424.
  • 10Lin D D K,Lim T J. The variational inference approach to joint data detection and phase noise estimation in OFDM [ J ]. IEEE Transactions on Signal Processing, 2007,55 (5) : 1862-1874.

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系统仿真学报
2008年 第2期

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