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Synchronization acquisition device and method based on first-in-first-out structure

A synchronous capture, first-in-first-out technology, applied in the communication field, to reduce the probability of wrong capture, speed up the processing speed, and overcome the high probability of wrong capture

Inactive Publication Date: 2015-11-11
XIDIAN UNIV +1
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  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a synchronous acquisition device and method based on a first-in-first-out structure, so as to solve the problems of high probability of wrong acquisition and high probability of missing acquisition in the prior art in synchronous acquisition , to improve the performance of the communication system

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  • Synchronization acquisition device and method based on first-in-first-out structure

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the accompanying drawings.

[0046] Refer to attached figure 1 , The device of the present invention includes a synchronous sequence acquirer, a correlator group, an FFT converter, a maximum signal selector and a decision unit connected through a signal transmission line. The input end of the synchronous sequence acquirer receives the wireless transmission signal, and the correlator group includes P correlators and P adders, and the output end of the synchronous sequence acquirer is respectively connected with correlator 1, correlator 2, ... correlator P The input terminals are connected, the output terminals of correlator 1, correlator 2, ... correlator P are connected with the input terminals of the adder corresponding to the correlators, the output terminals of the adder are connected with the input terminals of the FFT converter, and the FFT converter The output terminal of the maximum signal...

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Abstract

Provided is a synchronization acquisition device and method based on a first-in first-out structure. The device comprises a synchronous sequence acquiring device, a correlator set, an FFT converter, a peak signal selector and a judging device. The method comprises the steps that (1) the synchronous sequence acquiring device acquires a synchronous sequence of a code element length, (2) the correlator set carries out sectionalized correlation operation on the synchronous sequence and a local reference, (3) the FFT converter carries out FFT conversion on the correlation operation result of the correlator set, (4) the peak signal selector selects the amplitude peak value from the amplitude values output by the FFT converter, (5) a threshold comparator compares the amplitude peak value with a threshold value and stores the comparison result in an FIFO recorder, and (6) an FIFO detector detects the FIFO recorder under the control of the comparison result output by the threshold comparator and judges whether synchronization acquisition succeeds or not. The synchronization acquisition device and method based on the first-in first-out structure has the advantages of being small in occupancy of resources, high in acquisition speed, low in probability of omissive acquisition and wrong acquisition of the synchronization acquisition and high in probability of correct synchronization acquisition.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a synchronization acquisition device based on a first-in-first-out structure in wireless communication and a method thereof. The invention can be used for the receiving end of the wireless communication system to capture synchronous sequence in the received signal synchronously, realize the synchronization between the receiving end and the sending end, and ensure the correct reception of information. Background technique [0002] In a wireless communication system, in order to correctly demodulate information, it is necessary to realize the synchronization between the receiving end and the sending end. Therefore, for a wireless communication receiver, one of the most critical issues is to achieve synchronization between the local reference sequence and the synchronization sequence in the received signal. [0003] At present, a widely used synchronization acquisition ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W56/00
Inventor 李悦王阳赟王勇超杨素娟王玉珏
Owner XIDIAN UNIV
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