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Power line communication system based on OFDM technology

A technology of power line communication and technology, applied in the direction of distribution line transmission system, multi-frequency code system, etc., can solve the problems of strong multipath effect, strong interference, large attenuation, etc., and achieve strong noise and interference ability and strong anti-interference ability , the effect of improving the sensitivity

Inactive Publication Date: 2015-10-28
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a power line communication system based on OFDM technology to solve the problems of strong interference, strong multipath effect and large attenuation in existing power line communication

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  • Power line communication system based on OFDM technology
  • Power line communication system based on OFDM technology
  • Power line communication system based on OFDM technology

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Embodiment Construction

[0042] In order to make the purpose, technical solution and advantages of the present invention clearer, the composition and working principle of the power line communication system of the present invention will be described below in combination with specific embodiments and with reference to the accompanying drawings.

[0043] Such as figure 1 As shown, the power line communication system based on OFDM technology provided by the present invention includes a sending end, a receiving end and a system control end, wherein the sending end provides configuration information such as data transmission rate, sending mode, and sending byte length according to the system control end Constitute a frame header data packet for transmitting related configurations. When sending, first send the frame header data packet, and then send the real data packet; the receiving end first receives the frame header data packet under the control of the system control terminal, and uses The configuration...

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Abstract

The invention discloses a power line communication system based on OFDM technology. The power line communication system comprises a sending terminal, a receiving terminal and a system control terminal, wherein the sending terminal, according to configuration information provided by the system control terminal, establishes a frame header data packet for transmitting associated configurations, and in a sending process, the sending terminal firstly sends the frame header data packet and then sends a real data packet; the receiving terminal, under the control of the system control terminal, firstly receives the frame header data packet, analyzes the configuration information in the sending process from the frame header data packet, and receives the real data packet according to the analyzed information, so that self-adaptive reception of transmission data with different rates is implemented. The power line communication system based on the OFDM technology, which is provided by the invention, has the characteristics of high reliability and high speed under a complex power line environment.

Description

technical field [0001] The present invention relates to Orthogonal Frequency Division Multiplexing (OFDM) technology in multi-carrier modulation (MCM), in particular to a power line communication system based on OFDM technology. Background technique [0002] The power line communication system realizes communication by modulating the data to be transmitted onto a 50Hz or 60Hz power frequency power line, and using the power line as the transmission medium. The power line network has the advantages of fast networking and low investment, and has broad application prospects in the fields of smart meter reading, industrial control, smart buildings and street lamp control. However, due to factors such as complex topology of the power line network, strong time-varying load, and unstable working environment, the interference of the power line is strong, the multipath effect is strong, and the attenuation is large, which is not conducive to transmission. Therefore, higher requirement...

Claims

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Application Information

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IPC IPC(8): H04B3/54H04L27/26
Inventor 凌康乔树山黑勇赵慧冬孙晓蕾宋强国
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI