|
|||||
|
|
| 多径衰落信道中基于自适应MCMC的调制识别 | |
| 引用本文： | 靳晓艳 周希元 张琬琳. 多径衰落信道中基于自适应MCMC的调制识别[J]. 北京邮电大学学报, 2014, 37(1): 31-34. DOI: 10.13190/j.jbupt.2014.01.007 |
| 作者姓名： | 靳晓艳 周希元 张琬琳 |
| 作者单位： | 1. 西安电子科技大学 ISN国家重点实验室, 西安 710071; 2. 中国电子科技集团公司第五十四研究所, 石家庄 050081; 3. 西安应用光学研究所, 西安 710071 |
| 摘 要： | 针对多径衰落信道中幅相调制信号的类型识别问题，提出了一种基于自适应马尔可夫链蒙特卡洛（MCMC）--自适应Metropolis的改进算法. 该算法利用Markov链的历史信息自动调整建议分布函数的协方差矩阵，使其不断地逼近目标分布，从而避免了传统Metropolis算法中建议分布函数选取这一难题，并能有效地提高采样效率. 仿真实验表明，算法具有很好的识别精度，证明了算法的有效性. |
| 关 键 词： | 调制识别 多径衰落 自适应Metropolis 马尔可夫链蒙特卡洛 |
| 收稿时间： | 2012-12-12 |
Modulation Recognition Using Adaptive MCMC in Multipath Fading Channel |
|
| JIN Xiao-yan,ZHOU Xi-yuan,ZHANG Wan-lin. Modulation Recognition Using Adaptive MCMC in Multipath Fading Channel[J]. Journal of Beijing University of Posts and Telecommunications, 2014, 37(1): 31-34. DOI: 10.13190/j.jbupt.2014.01.007 | |
| Authors: | JIN Xiao-yan ZHOU Xi-yuan ZHANG Wan-lin |
| Affiliation: | 1. National Key Laboratory of Integrated Services Networks, Xidian University, Xi'an 710071, China; 2. The No.54 Research Institute of CETC, Shijiazhuang 050081, China; 3. Xi'an Institute of Applied Optics, Xi'an 710065, China |
| Abstract: | A new algorithm based on adaptive Metropolis algorithm for recognizing phase-amplitude-modulated signals in multipath fading channel was proposed. The method uses the full history of the chain to tune covariance of the proposal distribution adaptively. This adaptation strategy can approach an approximation of the target distribution, which can avoid the problem of selecting proposal distribution in traditional Metropolis algorithm and improve the sampling efficiency effectively. Simulation show that the proposed method has high accuracy which verifies the validity of the algorithm. |
| Keywords: | modulation classification multipath fading adaptive Metropolis Markov chain Monte Carlo |
| 本文献已被 CNKI 等数据库收录！ | |
| 点击此处可从《北京邮电大学学报》浏览原始摘要信息 | |
| 点击此处可从《北京邮电大学学报》下载全文 | |