Method and device for circuit emulation

Abstract

Embodiments of the present invention relate to a method and device for circuit emulation. The device includes an analog-to-digital conversion module, which is used to convert the initial analog signal transmitted by the transmitter into a digital signal; a digital signal simulation module, which is used to simulate and simulate the transmission of the digital signal output by the analog-to-digital conversion module at a given distance, and Obtain the simulated digital signal; the analog-to-digital conversion module is used to convert the simulated digital signal output by the digital signal simulation module into a simulated analog signal, and transmit the simulated analog signal to the receiving end Signal. The method and device for circuit simulation in the embodiment of the present invention can simulate the simulation of analog signal propagation for a certain distance, can reduce the volume of the simulator, and realize xDSL signal attenuation and crosstalk simulation with arbitrary distance, small step, and high precision.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for circuit emulation. Background technique [0002] The test networking diagram of x Digital Subscriber Line (x Digital Subscriber Line, referred to as "xDSL") is usually as follows figure 1 shown. Among them, the central office (central office, referred to as "CO") refers to the xDSL user system at the central office end, and the number of user line-to-ports generally ranges from dozens to hundreds; customer premises equipment (customer premises equipment, referred to as "CPE") It is a large number of xDSL cat terminals, the number of which matches the number of ports of the CO; the copper line emulator is used to simulate the attenuation and crosstalk of the copper line between the CO and the CPE, and the number of ports is supported to match the number of the CO; the packet sending instrument is Instruments for business flow testing can generate data packets an...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the current line emulator has been difficult to meet the requirements of arbitrary distance, small step, and high precision subscriber line attenuation and crosstalk simulation; and the requirements for the bandwidth increase, distance increase, and minimum step reduction of the existing emulator , it is necessary to redesign the simulation module and develop the corresponding hardware

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