Broadband power line carrier communication system and method based on OFDM technology

A broadband power line and carrier communication technology, applied in the field of communication transmission, can solve problems such as communication breakpoints, achieve fast transmission and solve communication breakpoints

Pending Publication Date: 2021-03-23
辽宁东大电力科技有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a broadband power line carrier communication system and method based

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  • Broadband power line carrier communication system and method based on OFDM technology
  • Broadband power line carrier communication system and method based on OFDM technology
  • Broadband power line carrier communication system and method based on OFDM technology

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Embodiment Construction

[0034] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0035] In order to solve the problem of communication breakpoints that existed in areas where fiber optic laying was not possible in the past. This embodiment provides a broadband power line carrier communication system based on OFDM technology, see figure 1 , the communication system is mainly composed of distribution network terminal equipment 1, modulator 2, carrier head end 3, power line 4...

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Abstract

The invention discloses a broadband power line carrier communication system and method based on OFDM (Orthogonal Frequency Division Multiplexing) technology, and the system modulates service information of distribution network terminal equipment into a high-frequency digital signal flow, converts the high-frequency digital signal flow into a low-rate multi-path parallel data flow through serial-parallel conversion, converts the low-rate multi-path parallel data flow into a time domain signal through Fourier transform. Multiple paths of parallel data are stringed into a sequence through parallel-to-serial conversion, digital-to-analog conversion serves as a transmitting signal to be loaded to a power line, information transmission is conducted through the power line, a receiving terminal converts the information back to original data through reverse action and sends the original data to a master control platform, and safe and rapid transmission of service related information is completed. According to the system, through composition design of a carrier head end and a carrier terminal, information transmission is carried out by taking a power line as a transmission medium; the communication method is completed on the basis of the communication system, information transmission can be carried out through the power line, and the problem that a power grid has many communication breakpoints is effectively solved.

Description

technical field [0001] The disclosure of the present invention relates to the technical field of communication transmission, in particular to a broadband power line carrier communication system and method based on OFDM technology. Background technique [0002] The construction of my country's power grid has now entered the stage of comprehensive coverage of smart grids, and the construction of smart grids is inseparable from the transmission and communication of information. The current communication is mainly realized through optical fiber and wireless public network. However, due to terrain, history and municipal construction factors, most areas in my country, especially the main urban areas, cannot achieve full-coverage underground laying of optical fibers; and although the wireless public network is convenient to construct, its security and bandwidth cannot meet the growing business need. [0003] At present, there are many communication breakpoints in the power grid, w...

Claims

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Application Information

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IPC IPC(8): H04B3/54H04L27/26H04L25/03
CPCH04B3/54H04B3/544H04B2203/5462H04L25/03006H04L27/2601H04L27/2602H04L27/2628H04L27/265
Inventor 曲家兴朱帅
Owner 辽宁东大电力科技有限公司
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