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The Design of Modem in High Speed Cable Telemetry System
Author(s): 
Pages: 66-68
Year: Issue:  1
Journal: WELL LOGGING TECHNOLOGY

Keyword:  调制解调器正交频分复用高速电缆遥传系统;
Abstract: 根据奈斯特定律,测井电缆所能传输的基带信号的极限速率为200 kBit/s,这给提高信息传输速率带来很大困难.因此,需要采用高效的调制解调技术.介绍了高速电缆遥传系统中的调制解调器设计方案及实现.通过对OFDM(正交频分复用)技术原理及测井电缆传输特性的分析,设计出满足测井电缆所需的调制解调器.在测井仪器中首次使用OFDM技术,满足了测井仪器的设计要求.
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