Low-voltage orthogonal frequency division multiplexing (OFDM) carrier physical layer communication performance detecting system

A technology of communication performance and detection system, applied in the direction of line transmission monitoring/testing, line transmission components, etc., can solve the problems of incomplete test performance indicators, low test efficiency of testing equipment, etc., to achieve convenient testing process, saving space and manpower Cost, system integration effect

Active Publication Date: 2013-07-10
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned problems existing in the prior art and provide a low-voltage OFDM carrier physical layer co

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  • Low-voltage orthogonal frequency division multiplexing (OFDM) carrier physical layer communication performance detecting system
  • Low-voltage orthogonal frequency division multiplexing (OFDM) carrier physical layer communication performance detecting system
  • Low-voltage orthogonal frequency division multiplexing (OFDM) carrier physical layer communication performance detecting system

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In the embodiment of the present invention, the low-voltage OFDM carrier physical layer communication performance detection system is to place the main instruments that need to be used in a large cabinet. For the convenience of the test system, all instruments are connected to the same bus, and the bus When testing different indicators, the signals are input into different instruments, and there are two mixers in the bus, which can mix and divide the sig...

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Abstract

The invention discloses a low-voltage orthogonal frequency division multiplexing (OFDM) carrier physical layer communication performance detecting system which is used for detecting emission performance indexes and receiving performance indexes of a low-voltage OFDM carrier physical layer. The detecting system comprises a signal isolation device, a standard carrier sending device, a carrier to be detected sending device, a carrier to be detected receiving device, a standard 50 omega impedance power network, a coupling circuit, two mixers, two adjustable attenuators, a white gaussian noise generator, a line impedance stabilizing network, a programmable logic controller (PLC) demodulation device, an alternating current power meter, a 220V alternating current power source, a signal generator, a network analyzer, a spectrum analyzer, a channel simulator, a signal analyzer and a computer. According to the technical characteristics of low-voltage power line carrier communication of an OFDM modulation mode, the detecting system is capable of conducting detailed test to the main performance indexes of the communication mode, the testing process is speedy, system conformability is high, system manufacturing cost is low, and space and labor cost are saved.

Description

technical field [0001] The invention relates to the field of power line carrier communication, in particular to a low-voltage OFDM carrier physical layer communication performance detection system. Background technique [0002] At present, there is no special detection system for the detection of low-voltage power line carrier communication based on OFDM modulation. Most of the test equipment used is built with wireless communication equipment, which not only causes waste of test equipment, but also reduces test efficiency. Fully tested for all performance indicators. Contents of the invention [0003] The purpose of the present invention is in order to overcome the above-mentioned problems existing in the prior art, provide a kind of low-voltage OFDM carrier physical layer communication performance detection system, to solve the problem that current detection equipment test efficiency is low and cannot test all performance indicators completely. [0004] In order to achi...

Claims

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Application Information

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IPC IPC(8): H04B3/46
Inventor 翟向向易忠林袁瑞铭田海亭李顺昕钟侃
Owner STATE GRID CORP OF CHINA
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