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基于协同神经网络的频率估计

Frequency Estimate Basing on Synergetic Neural Network
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摘要 利用协同神经网络解决通信中的频率估计问题,以卫星通信中去除多普勒频移为背景,研究对二进制相位键控(BPSK)信号的频偏估计。在大多普勒频移被划分为若干较小的频率区间的情况下,用协同神经网络中的序参量来表示每个频率子区间,通过竞争某个序参量最终胜出的方式,便可确定出信号所在的频率区间。利用伴随向量的简化逼近形式使得协同神经网络的算法复杂度大大降低,但也引入了一定的系统误差。通过分析及仿真,利用协同神经网络捕获大多普勒频移具有速度较快,硬件代价不大等优点。 This text solves the basic and important frequency estimate problem in communication by synergetic neural network. Basing frequency estimate in satellite communication, concretely studies the frequency estimate about BPSK signal. When the large Doppler frequency is partitioned several smaller area, each order parameter stands for each area. Once get the winner of the order parameters, the smaller frequency is confirmed. The approximation of the adjoint vectors simplify the complexity of arithmetic, but the system error is caused. This method has rapid capture speed, and smaller cost by analyzing and simulation.
出处 《重庆大学学报(自然科学版)》 EI CAS CSCD 北大核心 2007年第5期39-42,共4页 Journal of Chongqing University
基金 重庆市科委自然科学基金资助项目(20042683/20050207) 重庆市教委自然科学基金资助项目(KJ061409)
关键词 协同神经网络 序参量 频率区间 注意参数 synergetic neural network order parameter frequency area frequency estimation
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参考文献6

  • 1HAKEN H.Advanced synergetics[M].Berlin:Springer,1983.
  • 2黄振,陆建华,杨士中.卫星通信中多普勒频移的快速捕获[J].电子学报,2003,31(7):1052-1056. 被引量:26
  • 3HAKEN H.协同学[M].徐锡申,译.北京:原子能出版社,1984.
  • 4樊昌信 等.通信原理[M].国防工业出版社,1995..
  • 5DAFFERSHOFER A,HAKEN H.Synergetic computers for pattern recognition-a new approach to recognition of deformed patterns[J].Pattern Recognition,1994,27(12):1697-1705.
  • 6HAKEN H.协同计算机和认知-神经网络的自上而下方法[M].杨家本,译.北京:清华大学出版社,1994.

二级参考文献8

  • 1黄振.[D].重庆:重庆大学通信工程学院,2001.
  • 2Marco Luise, et al. Carrier frequency recovery in all-digital modems for burst-mode transmissions[J]. IEEE Trans Commun, 1995,43(2/3/4) :1169 - 1177.
  • 3B C Lovell, et al. The statistical performance of some instantaneous frequency estimator[J]. IEEE Trans AKSP, 1992,40(7) : 1708 - 1723.
  • 4Umberto Mengali, et al. Data-aided frequency estimation for burst digital transmission[J]. IEEE Trans Commun, 1997,45(1) :23 - 25.
  • 5Francis D Natali. AFC tracking algorithms[J]. IEEE Trans Commun,1984,32(8) :935 - 947.
  • 6Eric W Siess, et al. Acquisition of direct sequence signals with modulation and jamming[J]. IEEE Journal on selected areas in Commun,1986, SAC - 4(2) :254 - 272.
  • 7Andreas Polydoros, et al. A unified approach to serial search spread-spectrum cede Acquisition-part Ⅱ : a matched- filter receiver[J].IEEE Trans Commun, 1984,32(5) :550 - 560.
  • 8P N Steven. An investigation of carrier recovery techniques for PSK modulated signals in CDMA and multipath mobile environments [D].Virginia: Virginia polytechnic institute and state university, 1997.

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