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一种基于周期平稳的上行OFDMA系统同步参数盲估计方法 被引量：1

A Blind Uplink OFDMA Synchronization Parameters Estimation Based on Cyclostationarity
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摘要 该文给出了一种应用于上行正交频分多址(OFDMA)系统的同步参数盲估计方法。该方法利用信号的二阶周期平稳特性,针对不同的子载波分配策略,对信道的频偏和时延进行了估计。性能仿真证明,这种盲估计方法具有较高的精度和很好的抗噪特性。 An algorithm for the blind estimation of uplink OFDMA synchronization parameters is introduced in this article. The algorithm exploits the second-order cyclostationarity of the received signal to estimate the frequency offset and time delay, in the different tone assignment schemes. The performance of high resolution and immune to the effect of noise and interference is evaluated through simulation results.
作者 花梦 朱近康
机构地区 中国科学技术大学个人通信与扩频实验室
出处 《电子与信息学报》 EI CSCD 北大核心 2006年第7期1287-1290,共4页 Journal of Electronics & Information Technology
关键词 正交频分多址 周期平稳 周期谱 同步参数 OFDMA, Cyclostationarity, Cyclic spectra, Synchronization parameters
分类号 TN929.531 [电子电信—通信与信息系统]
  • 相关文献

参考文献8

  • 1Morelli M. Timing and frequency synchronization for the uplink of an OFDMA system. IEEE Trans. on Communications, 2004,2(52): 296-306.
  • 2Kim Taekwan, Cho Namshin, Cho Jaehee. A fast burst synchronization for OFDM based wireless asynchronous transfer mode systems. Global Telecommunications Conference, Geneva,Switzerland, 1999, 1A(8): 543 - 547.
  • 3Bolcskei H. Blind estimation of symbol timing and carrier frequency offset in pulse shaping OFDM systems. Proceedings,ICASSP '99, Phoenix, Arizona, USA, 1999, 5:2749 - 2752.
  • 4Park Byungjoon, Cheon Hyunsoo, Ko Eunseok. A blind OFDM synchronization algorithm based on cyclic correlation. IEEE Signal Processing Letters, 2004, 11(2): 83 - 85.
  • 5Bolcskei H. Blind high-resolution uplink synchronization of OFDM-based multiple access schemes. IEEE Workshop on Signal Processing Advances in Wireless Communications(SPAWC), Annapolis, MD, USA, 1999, 24:166 - 169.
  • 6Tonello A M, Laurenti N, Pupolin S. Analysis of the uplink of an asynchronous multi-user DMT OFDMA system impaired by time offsets, frequency offsets, and multi-path fading. VTC'02, Las Vegas, USA, 3(3): 1094 - 1099.
  • 7Kuang Linling, Lu Jianhua, Ni Zuyao. Non-pilot-aided carrier frequency tracking for uplink OFDMA systems. IEEE International Conference on Communications, Paris, France,2004, 6:3193 - 3196
  • 8Gardner W A. Introduction to Random Process. New York:McGraw-Hill, 1990, Chapter 11.

同被引文献5

  • 1Morelli M. Timing and frequency synchronization for the uplink of an OFDMA system [J]. IEEE Trans on Communications, 2004, 2(52): 296-306.
  • 2Kim T, Cho N, Cho J. A fast burst synchronization for OFDM based wireless asynchronous transfer mode systems[C] ///Proc of Global Telecommunication Conf. Piscataway, USA:IEEE Press, 1999: 543- 547.
  • 3Su Huan, Zhang Jianhua, Zhang Ping. ZCZ sequences-based frequency synchronization for interleaved OFDMA uplink[C]//Proc of VTC 2006-Spring. Piscataway, USA:IEEE Press, 2006:2033- 2036.
  • 4Cao Zhongren, Tureli U, Yao Yudong. Efficient structure-based carrier frequency offset estimation for interleaved OFDMA uplink[C]//Proc of IEEE International Conference on Communications. Piscataway, USA:IEEE Press, 2003: 3361-3365.
  • 5Liu Hui, Tureli U. A high-efficiency carrier estimator for OFDM communications [J]. IEEE Communications Letters, 1998, 2(4) : 104-106.

引证文献1

电子与信息学报
2006年 第7期

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