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The Research of Multi-channel Data Level Conversion and Multiplexing Transmission System in Fiber Optic Communications

Author: ZhongFei
Tutor: GuoShuXu
School: Jilin University
Course: Circuits and Systems
Keywords: Optical fiber Level Translators TDM
CLC: TN929.11
Type: Master's thesis
Year: 2008
Downloads: 281
Quote: 5
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Abstract


Today's era, has entered the era of rapid development of information , information and people 's lives, therefore , the transmitted signal transmission mode applied and transmission equipment has become a focus of the object of study . Based on the non-compressed digital Optical principles , and fiber as a transmission medium , the digital multi-channel bi-directional Optical data transmission has been studied . The data of this research using single-mode fiber transmission , the use of TDM multiplexing method and complete multi-channel bidirectional transmission of control data . Data transmission using RS232/485 serial communication standard ( optional ) . This article describes the development of PDH , multi-channel bidirectional transmission of data overall principles and circuit design. Core of the system is the data processing and multi- channel data multiplexing principle, the data processing was completed for serial data communication and level shifting function, multi -channel data multiplexing using programmable logic device (CPLD) and serializer / deserializer chips combined to achieve multi-channel low-speed parallel data and high-speed serial data digital multiplexing tap .

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Wireless communications > Lightwave communications, laser communications > Optical fiber communication
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