| 运用格状图支路转移规则和Viterbi算法实现数字信号盲估计 |
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| 引用本文： | 欧阳聪星, 乐光新. 运用格状图支路转移规则和Viterbi算法实现数字信号盲估计[J]. 电子与信息学报, 2001, 23(6): 528-532. |
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| 作者姓名： | 欧阳聪星 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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| 基金项目： | 国家自然科学基金(69872008) |
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| 摘 要： | 该文提出了一种新的离散数字信道盲估计算法,运用格状图中的一步支路转移规则,大大削减了最佳估计所要求的计算量。文中首先介绍了符合最大似然序列估计(MLSE)准则的信道最佳盲估计算法,然后阐述了运用格状图中的一步支路转移规则对格状图进行筛选的基本思想,接着详细介绍了本算法,最后通过数值仿真研究了本算法的性能。
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| 关 键 词： | 信道盲估计 信道盲均衡 Viterbi算法 格状图 最大似然序列估计 |
| 收稿时间： | 1999-03-11 |
| 修稿时间： | 1999-03-11 |
DIGITAL CHANNEL BLIND ESTIMATION USING VITERBI ALGORITHM AND THE BRANCH TRANSITION RULES OF TRELLIS |
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| Ouyang Congxing, Le Guangxin . DIGITAL CHANNEL BLIND ESTIMATION USING VITERBI ALGORITHM AND THE BRANCH TRANSITION RULES OF TRELLIS[J]. Journal of Electronics & Information Technology, 2001, 23(6): 528-532. |
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| Authors: | Ouyang Congxing Le Guangxin |
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| Affiliation: | School of Telecom., Beijing Univ. of Posts and Telecom., Beijing 100876 China |
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| Abstract: | A novel discrete-time digital channel blind estimation algorithm is proposed, which reduces the complexity of the optimal estimation considerably by using the one-step branch transition rules of trellis. In this paper, the optimal estimation algorithm based on the maximum likelihood sequence estimation is introduced first. Then the idea of selecting trellises based on the one-step branch transition rules in a trellis is explained. Following the presentation of the novel channel blind estimation algorithm, the performance of this algorithm is studied with computer simulation. |
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| Keywords: | Channel blind estimation Channel blind equalization Viterbi algorithm Trellis Maximum likehood sequence estimation |
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