Coding method and coding system capable of transmitting clock and data based on phase modulation

A phase modulation and coding method technology, applied in the field of digital signal transmission and coding, can solve problems such as unfavorable system, simplification, and unreasonable resource utilization, and achieve the effect of rational utilization, suitable for promotion, and saving the number of interconnected signals

Active Publication Date: 2016-01-20
FENGHUO COMM SCI & TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

[0005] As mentioned above, in terms of time synchronization, a time synchronization clock bus, second pulse bus and time information bus are also required. The independent transmission of signals by the above buses will occupy multiple terminal resour

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  • Coding method and coding system capable of transmitting clock and data based on phase modulation
  • Coding method and coding system capable of transmitting clock and data based on phase modulation

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[0022] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0023] See figure 1 As shown, the encoding method for transmitting clock and data based on phase modulation in the embodiment of the present invention includes the following steps:

[0024] S1: Set the coding frequency of the transmitting end to 4 times of the output frequency, and turn to S2.

[0025] S2: Define the interval code between two adjacent data frames as "1100", and define the code of the information data when the bit = "1" sent from the sender to the receiver is "1110", and send the sender to the receiver When the bit of the end = "0", the encoding of the information data is defined as "1000", and then go to S3.

[0026] The principle of S2 is: if the encoded data is regarded as 4 times the frequency NRZ (Non-ReturntoZero, non-return to zero) data, then there are three transmission symbols: (1) Transmission character "1100": space interval bit , As t...

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Abstract

The invention discloses a coding method and a coding system capable of transmitting clock and data based on phase modulation, and relates to the field of digital signal transmission coding. The method comprises the following steps of: S1, setting coding frequency of a transmitting end to be quadruple of output frequency, and switching to a step S2; S2, defining interval coding between two neighboring data frames as '1100', defining coding of information data transmitted to a receiving end by the transmitting end when bit='1' as '1110', defining coding of the information data transmitted to the receiving end by the transmitting end when bit='0' as 1000, and switching to a step S3; S3, transmitting the information data to the receiving end by the transmitting end, and simultaneously transmitting complete clock information, frequency information and frame alignment pulse signals during the transmission process. With the method and the system, transmission of three types of signals of clock, frame alignment pulse and information and control data buses can be completed through one signal bus, the number of interconnection signals is reduced, and resource is used reasonably, so that the method and the system are suitable for being generalized.

Description

technical field [0001] The invention relates to the field of digital signal transmission encoding, in particular to an encoding method and system for transmitting clock and data based on phase modulation. Background technique [0002] In the optical network, in order to support the bearer functions of the telecommunication network, frequency synchronization network and time synchronization network, the optical network transmission equipment (such as PTN, IPRAN, OTN, etc.) Time synchronization function. [0003] In order to realize the above functions, the transmission equipment of the optical network is designed with a frequency synchronization core unit and a time synchronization core unit. When the transmission device is in use, the service disk obtains the frequency synchronization signal of the system from the backplane, and the time synchronization core unit provides the frequency synchronization signal, frame alignment pulse, time synchronization pulse and time inform...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0041H04L1/0076
Inventor 陈垦
Owner FENGHUO COMM SCI & TECH CO LTD
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