一种改进的基于FG-Turbo多用户检测的软干扰消除算法
基于因子图与和积算法,给出了基于LDPC的FG-Turbo多用户检测扩展模型,仿真比较了最优MAP算法和软干扰消除算法的性能,并提出了一种基于敏感比特的软干扰估计新方法。仿真结果表明,改进后的软干扰消除算法在复杂度不变的情况下,有效地改善了系统性能。...
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| Published in | 电信科学 Vol. 28; no. 2; pp. 95 - 98 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国通信学会
01.02.2012
人民邮电出版社有限公司 郑州大学信息工程学院 郑州450001%郑州大学信息工程学院 郑州450001 解放军信息工程大学 郑州450001 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-0801 |
| DOI | 10.3969/j.issn.1000-0801.2012.02.018 |
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| Summary: | 基于因子图与和积算法,给出了基于LDPC的FG-Turbo多用户检测扩展模型,仿真比较了最优MAP算法和软干扰消除算法的性能,并提出了一种基于敏感比特的软干扰估计新方法。仿真结果表明,改进后的软干扰消除算法在复杂度不变的情况下,有效地改善了系统性能。 |
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| Bibliography: | factor graph; sum-product algorithm; FG-Turbo multiuser detection; soft interference cancellation; sensitive bit In this paper,based on the factor graph and sum-product algorithm,we get the extend model of FG-Turbo multiuser detection with LDPC coded,simulate and compare the performances of MAP algorithm and soft interference cancellation algorithm,and propose a new method to estimate interference symbols,that is based on sensitive bits algorithm.Simulation results show that in the case of the computational complexity unchanged,the soft interference cancellation algorithm modified can improve the performance of system effectively. Wang Zhongyong,Ren Xiaomin,Duan Linlin,Xiao Yan(1.College of Information Engineering,Zhengzhou University,Zhengzhou 450001,China;2.The PLA Information and Engineering University,Zhengzhou 450001,China) 11-2103/TN |
| ISSN: | 1000-0801 |
| DOI: | 10.3969/j.issn.1000-0801.2012.02.018 |