| 井下多媒体无线传感器网络动态子载波分配算法 |
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| 引用本文： | 范新越,杨维.井下多媒体无线传感器网络动态子载波分配算法[J].北京交通大学学报(自然科学版),2009,33(5). |
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| 作者姓名： | 范新越 杨维 |
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| 作者单位： | 北京交通大学全光网与现代通信网教育部重点实验室,北京,100044;河南理工大学河南省煤矿瓦斯与火灾防治重点实验室,河南,焦作,454003;中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京,100083;北京交通大学全光网与现代通信网教育部重点实验室,北京,100044;河南理工大学河南省煤矿瓦斯与火灾防治重点实验室,河南,焦作,454003;中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京,100083 |
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| 基金项目： | 国家自然科学基金资助项目，国家"863计划"资助项目，煤炭资源与安伞开采国家重点实验室(中国矿业大学)开放课题资助项目，河南省煤矿瓦斯与火灾防治实验窒开放课题资助项目 |
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| 摘 要： | 提出一种基于分组比例因子(RBS)改进的动态子载波分配算法.该算法采用子载波分组的策略以降低运算复杂度,并分步执行子载波初始分配和子载波优化分配以降低系统功耗.在初始分配阶段,将相邻的若干子载波分为一组,以载波组为单位实施RBS动态子载波分配,通过减少循环次数的方式降低复杂度;在优化分配阶段,通过最差载波组交换的形式对初始分配的结果进行微调,以进一步降低系统功耗.仿真结果表明,所提出的动态子载波分配算法以很小的误码率损耗为代价,获得了更低的运算复杂度和系统功耗.
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| 关 键 词： | 多媒体无线传感器网络 多带一正交频分复用-超宽带 动态子载波分配 |
Study on Dynamic Subcarrier Allocation for Underground Mine Multimedia Wireless Sensor Network |
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| FAN Xinyue,,YANG Wei,China.Study on Dynamic Subcarrier Allocation for Underground Mine Multimedia Wireless Sensor Network[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,2009,33(5). |
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| Authors: | FAN Xinyue YANG Wei China |
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| Institution: | FAN Xinyue1,2,3,YANG Wei1,3(1.Key Laboratory of All Optical Network , Advanced Telecommunication Network,Ministry of Education,Beijing Jiaotong University,Beijing 100044,China,2.Henan Key Laboratory of Coal Mine Methane , Fire Prevention,Henan Polytechnic University,Jiaozuo 454003,3.State Key Laboratory of Coal Resources , Safe Mining(China University of Mining , Technology),China) |
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| Abstract: | A dynamic subcarrier allocation algorithms based on grouped Ratio-based Selection(RBS)is proposed.Operation complexity is reduced by the step of grouping,and power consume is decreased by the step of initializing subcarrier allocation and optimizing subcarrier allocation.At initial allocation phases,some adjacent subcarriers are allocated as a group.Then,the RBS dynamic subcarrier allocation is applied within a group,and the complexity is reduced by lowering the number of circulation times.At optimal alloca... |
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| Keywords: | multimedia wireless sensor network multi-band orthogonal-frequency-division-multiplexing ultra-wideband(MB-OFDM-UWB) dynamic subcarrier allocation |
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