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Error code detection apparatus and method for digital exchange system

A technology of bit error detection and digital switching, applied in the direction of digital transmission system, data switching network, transmission system, etc., it can solve the problem that digital switching circuit cannot measure bit errors in a large number of user channels, so as to reduce the cost of the circuit and overcome the complexity of the circuit. , the effect of reducing the difficulty of design

Inactive Publication Date: 2007-10-03
ZTE CORP
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a bit error detection device and method for a large-scale digital switching system to solve the problem that existing digital switching circuits cannot simply and conveniently measure bit errors for a large number of user channels

Method used

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  • Error code detection apparatus and method for digital exchange system
  • Error code detection apparatus and method for digital exchange system
  • Error code detection apparatus and method for digital exchange system

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Embodiment Construction

[0025] The present invention will be described in detail below according to the drawings and embodiments.

[0026] As shown in Figure 1, the error detection device 10 comprises a first m-sequence generator 11, a serial-to-parallel conversion circuit 12, an error receiving circuit 13, a shift register 14, a second m-sequence generator 15, a control circuit 16, a comparison circuit 17 and error counter 18.

[0027] The pseudo-random code sequence produced by the first m-sequence generator 11 is output in the serial-to-parallel conversion circuit 12, and the serial-to-parallel conversion circuit 12 converts the m-series serial to parallel data into a channel width (generally 8bit) parallel data to be added to In the output channel to be subjected to bit error detection; the bit error receiving circuit 13 receives the parallel m-sequences through the external loopback, and outputs the parallel m-sequences bit by bit to the comparison circuit 17 through the shift register 14 for co...

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Abstract

The invention provides a kind of error detecting device for a digital exchanging system, which includes the first m series generator, series / parallel converting circuit, error receiving circuit, shift register, the second m series generator, control circuit, comparison circuit and error calculator; error detecting device generates series m series fake random code, which is converted into parallel data with the same width to exchanging channel through series / parallel converting circuit, the control circuit adds the parallel data into different the output channel of the error, then the data are returned to the input channel through external circuit, the error detecting device carries on the judgment if the returned data is fake random code.

Description

technical field [0001] The present invention relates to a digital exchange and transmission system, in particular to a code error generating and detecting device in digital communication. Background technique [0002] Bit error detection is a common measurement method in digital communication. Whether it is in wired communication or wireless communication, in order to determine the bit error generated in the process of digital exchange or digital transmission, it is necessary to perform bit error detection on digital exchange and transmission circuits. detection. [0003] The Chinese patent application No. 99812651.9 "Transmitter, Receiver and Method for Generating PN Sequences for Multiple User Channels in a Telecommunication System" provides a bit error detection method. This application mainly processes multiple User channel, by using a PN generator and state memory, the transmitter and receiver can perform bit error measurement on multiple user channels; corresponding t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L1/24H04L7/04
Inventor 程农朱励行
Owner ZTE CORP
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