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以往的通信行为指导系统未来通信, 以满足用户需求并适应环境变化, 是认知无线电系统的核心所在, 为此提出了一种基于贝叶斯网络的认知引擎, 用于解决在复杂多变的电磁环境与用户需求条件下, 认知无线电系统参数自适应调整的问题. 通过对系统过去通信行为样本数据, 进行结构学习和参数学习建立认知引擎, 将系统当前环境状态和用户需求信息经预处理作为推理的证据, 应用引擎决策出系统此时最佳的工作参数, 完成系统参数重构. 本文利用OPNET工具建立一个移动无线网络完成仿真实验, 仿真结果表明该认知引擎能有效地使移动无线网络适应环境变化, 改善端到端通信性能, 进一步验证了建模方法的可行性.
[1] Joseph M III 2000 Ph. D. Dissertation (Royal Institute of Technology)
[2] Haykin S 2005 IEEE Journal on Selected Areas in Communications 23 201
[3] Thomas W R Ph. D. Dissertation (Virginia Polytechnic Institute and State University)
[4] Zhao Z J, Zheng S L, Shang J N, Kong X Z 2007 Acta Phys. Sin. 56 6760 (in Chinese) [赵知劲, 郑仕链, 尚俊娜, 孔宪正 2007 物理学报 56 6760]
[5] Jiao C H, Wang K R 2010 Systems Engineering and Electronics 32 1083 (in Chinese) [焦传海, 王可人 2010 系统工程与电子技术 32 1083]
[6] Zhao Z J, Xu S Y, Zheng S L, Yang X N 2009 Acta Phys. Sin. 58 5118 (in Chinese) 赵知劲, 徐世宇, 郑仕链, 杨小牛 2009 物理学报 58 5118]
[7] Katidiotis A, Tsagkaris K, Demestichas P 2010 Computers & Electrical Engineering 36 518
[8] Feng W J, Liu Z, Qin C L 2011 Pattern Recognition and Artificial Intelligence 24 401 (in Chinese) [冯文江, 刘震, 秦春玲 2011 模式识别与人工智能 24 401]
[9] Jiang H, Ma J H, Huang Y H, Wu C 2011 Journal of Xi Dian University 38 139 (in Chinese) [江虹, 马景辉, 黄玉清, 伍春 2011 西安电子科技大学学报 38 139]
[10] Jiang H, Wu C, Ma J H 2011 Journal of University of Electronic Science and Technology of China 40 41 (in Chinese) [江虹, 伍春, 马景辉 2011 电子科技大学学报 40 41]
[11] Asma A, Badr B, Francine K, Fethi T B 2012 International Journal of Distributed and Parallel Systems 3 91
[12] Jensen F V, Nielsen T D 2007 Bayesian Networks and Decision Graphs (New York: Springer Verlag)
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[1] Joseph M III 2000 Ph. D. Dissertation (Royal Institute of Technology)
[2] Haykin S 2005 IEEE Journal on Selected Areas in Communications 23 201
[3] Thomas W R Ph. D. Dissertation (Virginia Polytechnic Institute and State University)
[4] Zhao Z J, Zheng S L, Shang J N, Kong X Z 2007 Acta Phys. Sin. 56 6760 (in Chinese) [赵知劲, 郑仕链, 尚俊娜, 孔宪正 2007 物理学报 56 6760]
[5] Jiao C H, Wang K R 2010 Systems Engineering and Electronics 32 1083 (in Chinese) [焦传海, 王可人 2010 系统工程与电子技术 32 1083]
[6] Zhao Z J, Xu S Y, Zheng S L, Yang X N 2009 Acta Phys. Sin. 58 5118 (in Chinese) 赵知劲, 徐世宇, 郑仕链, 杨小牛 2009 物理学报 58 5118]
[7] Katidiotis A, Tsagkaris K, Demestichas P 2010 Computers & Electrical Engineering 36 518
[8] Feng W J, Liu Z, Qin C L 2011 Pattern Recognition and Artificial Intelligence 24 401 (in Chinese) [冯文江, 刘震, 秦春玲 2011 模式识别与人工智能 24 401]
[9] Jiang H, Ma J H, Huang Y H, Wu C 2011 Journal of Xi Dian University 38 139 (in Chinese) [江虹, 马景辉, 黄玉清, 伍春 2011 西安电子科技大学学报 38 139]
[10] Jiang H, Wu C, Ma J H 2011 Journal of University of Electronic Science and Technology of China 40 41 (in Chinese) [江虹, 伍春, 马景辉 2011 电子科技大学学报 40 41]
[11] Asma A, Badr B, Francine K, Fethi T B 2012 International Journal of Distributed and Parallel Systems 3 91
[12] Jensen F V, Nielsen T D 2007 Bayesian Networks and Decision Graphs (New York: Springer Verlag)
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