A Frame Synchronization Device Compatible with Burst and Continuous Data
A frame synchronization and frame synchronization code technology, applied in electrical components, time division multiplexing systems, multiplexing communications, etc. Portability, versatility, and the effect of occupying less system resources
Active Publication Date: 2019-03-12
BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE +1
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Problems solved by technology
There are often two modes of burst data and continuous data in communication systems. In the past, frame synchronization devices usually supported either burst mode or continuous mode. Only by loading two modules can the compatible receiving and processing of burst and continuous data be realized. The requirements for resources and interface design are relatively high
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[0037] The present invention proposes to provide a frame synchronization device compatible with burst and continuous data, capable of supporting burst data and continuous data processing, and having versatility and portability.
[0038] like figure 1 As shown, the frame synchronization device of the present invention includes a shift register, a correlator, a comparator, a three-state control logic unit, a control module and a data output module.
[0039] The shift register receives the data input from the outside, each system clock shifts the received data to the right by 1 bit, and sends the registered data to the correlator and data output module within the same system clock. The shift register has K bits, K=L+1, and L is the length of the maximum frame synchronization code group.
[0040] In each system clock, the correlator performs bit-wise XOR of the data from the shift register and the set frame synchronization code group, and adds the obtained XOR results bit by bit ...
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The invention discloses a frame synchronization device in compatible with burst and continuous data. The frame synchronization device comprises a shifting register, a correlator, a comparator, a tristate control logic unit and a data output module; each system clock of the shifting register moves right the received data with one space to output to the correlator and the data output module; the correlator computes the correlation value of the data from the shifting register and the set frame synchronization code group to the comparator; the comparator judges whether the frame synchronization code group is found according to the received correlation value, and outputs a mark whether the frame synchronization code group is found to the tristate control logic unit; the tristate control logic unit switches between the searching state and the locking state under the burst mode, and performs the switching among the searching state, the checking state and the locking state under the continuous mode; the data output module cleanses the frame data when receiving the frame synchronization locking mark, and outputs the cleansed data and the frame synchronization pulse to a back-side module. The frame synchronization device disclosed by the invention can realize the compatible receiving process of the burst and continuous data without loading two modules.
Description
technical field [0001] The invention relates to a frame synchronization device compatible with burst and continuous data, which is used for realizing frame synchronization of a digital communication system and belongs to the fields of mobile communication, satellite communication, remote sensing, investigation and wireless relay. Background technique [0002] Frame synchronization is an important part of the communication system. In modern digital communication systems, in order to improve transmission efficiency, it is often necessary to combine several digital signals into one high-speed digital signal for transmission through high-speed channels. The device that realizes this function is called a digital multiplexing system. When the digital multiplexing system merges low-speed digital signals into high-speed signals at the sending end, it often inserts frame synchronization code groups for synchronization. At the receiving end, the The frame synchronization code group i...
Claims
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IPC IPC(8): H04J3/06
CPCH04J3/0605H04J3/0608
Inventor 邬润辉刘佳琪孟刚刘举涛高路刘鑫任爱民柴忪白文浩江志烨王伟东袁雷周岩王申兆常青李显旭那成亮童长海孙长红
Owner BEIJING AEROSPACE INST OF THE LONG MARCH VEHICLE