| OFDM系统的受限隐马尔可夫模型 |
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| 引用本文： | 侯晓林,李书博,纪红,尹长川,乐光新. OFDM系统的受限隐马尔可夫模型[J]. 电路与系统学报, 2006, 11(2): 110-115 |
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| 作者姓名： | 侯晓林 李书博 纪红 尹长川 乐光新 |
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| 作者单位： | 北京邮电大学,电信工程学院,北京,100876 |
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| 摘 要： | 本文采用隐马尔可夫模型(HMM)的一种特例--受限隐马尔可夫模型(CHMM)对正交频分复用(OFDM)系统进行建模,给出了CHMM参数估计算法的改进,可避免计算机编程实现时出现下溢导致的计算失败.通过仿真讨论了CHMM状态数的选取问题,并给出了HIPERLAN/2室内无线信道环境下OFDM系统的一组CHMM,该模型可用于比较不同编码方案的性能或者分析高层协议性能.
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| 关 键 词： | 突发差错 |
| 文章编号： | 1007-0249（2006）02-0110-06 |
| 收稿时间： | 2003-11-26 |
| 修稿时间： | 2004-05-08 |
Constrained hidden markov model for OFDM systems |
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| HOU Xiao-lin,LI Shu-bo,JI Hong,YIN Chang-chuan,YUE Guang-xin. Constrained hidden markov model for OFDM systems[J]. Journal of Circuits and Systems, 2006, 11(2): 110-115 |
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| Authors: | HOU Xiao-lin LI Shu-bo JI Hong YIN Chang-chuan YUE Guang-xin |
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| Abstract: | Constrained Hidden Markov Model (CHMM), which is a special form of Hidden Markov Model (HMM), is used to model Orthogonal Frequency Division Multiplexing (OFDM) systems. The effective scaling method for CHMM parameter estimation is presented to avoid underflow in computer programming. We discuss how to choose proper CHMM state numbers by simulation and provide a group of CHMM for OFDM system in HIPERLAN/2 indoor wireless channel, which can be used to facilitate the comparison of different coding schemes and analysis of high-level protocol performance. |
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| Keywords: | OFDM HMM CHMM |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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