| 基于OFDM的单芯电缆调制解调系统设计与仿真 |
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| 引用本文： | 董惠娟,李瑞敏,张广玉.基于OFDM的单芯电缆调制解调系统设计与仿真[J].测井技术,2008,32(6). |
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| 作者姓名： | 董惠娟 李瑞敏 张广玉 |
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| 作者单位： | 哈尔滨工业大学机电工程学院,黑龙江,哈尔滨,150001;哈尔滨工业大学机电工程学院,黑龙江,哈尔滨,150001;哈尔滨工业大学机电工程学院,黑龙江,哈尔滨,150001 |
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| 基金项目： | 国家自然科学基金项目
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| 摘 要： | 测井技术的成像化和组合化发展使得井下仪器上传的数据量越来越大,需要开发高效率的通信系统以解决数控测井中的通信瓶颈.提出了一种基于正交频分复用OFDM(Orthogonal Frequency Division Multiplexing)的单芯测井电缆调制解调系统方案,并完成了实现此方案的软硬件系统设计.此外,在MATLAB中进行了系统级仿真,模拟了调制解调系统的实现过程和所需的数字信号处理方法,仿真结果表明设计正确、可行.设计中采用了调制解调技术OFDM,使单芯电缆测井系统的数传速率从原来多用的22.8 kbit/s提高到102.4 kbit/s,满足了成像测井及组合测井对单芯电缆测井系统的数据传速率要求.
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| 关 键 词： | 测井系统 正交频分复用OFDM 单芯电缆 传速率 调制解调系统 MATLAB仿真 |
Design and Simulation of the OFDM-based Modulation and Demodulation System for Single-core Cable |
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| DONG Hui-juan,LI Rui-min,ZHANG Guang-yu.Design and Simulation of the OFDM-based Modulation and Demodulation System for Single-core Cable[J].Well Logging Technology,2008,32(6). |
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| Authors: | DONG Hui-juan LI Rui-min ZHANG Guang-yu |
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| Affiliation: | College of Mechanical and Electrical Engineering;Harbin Institute of Technology;Harbin;Heilongjiang 150001;China |
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| Abstract: | In exploitation of oil and natural gas,the amount of datum uploaded from downhole logging tools will be larger and larger with the logging technology transformed into imaging and resultant.So it is essential to develop high efficiency communication system to solve the bottleneck problem of NC logging technology.For this purpose,proposed is one OFDM-based modulation & demodulation system scheme for single-core logging cable,and completed is the hardware and software system design to fulfil the scheme.Then ca... |
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| Keywords: | logging system OFDM single-core logging cable transmision rate modulation and demodulation system MATLAB-based simulation |
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