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OFDM-based high-speed narrowband carrier communication device

A narrowband carrier and communication device technology, applied in the direction of modulated carrier system, digital transmission system, wired transmission system, etc., to achieve the effect of full-duplex communication

Inactive Publication Date: 2016-04-13
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the continuous development of smart grid technology, not only the amount of data exchanged by the network has increased, but also the requirements for security and reliability in data transmission have also been continuously improved, making the existing narrowband carrier communication (NB-PLC) technology It has been unable to meet the requirements, so the high-speed NB-PLC (3kHz-500kHz) technology has become an inevitable trend in the future development of PLC technology by virtue of its higher speed, safer and more robust characteristics.

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  • OFDM-based high-speed narrowband carrier communication device

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Embodiment Construction

[0012] The overall structure of the present invention is as figure 1 As shown, it consists of six parts including a coupling circuit 1, an analog front end 2, a transceiver front end 3, a physical layer processing unit 4, a media access control (MAC) 5, and an aggregation layer processing unit 6. Among them, the analog front end 2, the transceiver front end 3 and the physical layer processing unit 4 adopt dual channels of transceiver to realize full-duplex communication; the coupling circuit adopts an external circuit; the analog front end is located on the analog board of the system hardware platform; the transceiver front end and the physical layer processing unit are on the Realized in FPGA chip, MAC and convergence layer processing unit are realized in ARM chip, both FPGA and ARM chip are located on the digital board of the system hardware platform.

[0013] Coupling circuit 1 is an external circuit, and a standard coupler is used directly. It is necessary to ensure the co...

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Abstract

The invention belongs to the power line carrier communication field and relates to an OFDM-based high-speed narrowband carrier communication device. The device comprises a coupling circuit, an analog front end, a transmitting-receiving front end, a physical layer processing unit, a media access control (MAC), a convergence layer processing unit and the like, wherein the transmitting-receiving front end and the physical layer processing unit are realized in an FPGA chip, and the MAC and the convergence layer processing unit are realized in an ARM chip; the FPGA and the MAC chip are both located on a system hardware platform digital board; and based on an OFDM multi-carrier signal modulation method, channel coding and error correction can be realized. The narrow band (3kHz-to-500kHz) carrier communication device has the advantages of high efficiency, high stability and high speed communication.

Description

technical field [0001] The invention relates to the field of power line carrier communication, in particular to an OFDM-based high-speed narrowband carrier communication device. Background technique [0002] With the continuous development of smart grid technology, not only the amount of data exchanged by the network has increased, but also the requirements for security and reliability in data transmission have also been continuously improved, making the existing narrowband carrier communication (NB-PLC) technology It has been unable to meet the requirements, so the high-speed NB-PLC (3kHz-500kHz) technology has become an inevitable trend in the future development of PLC technology by virtue of its higher speed, safer and more robust characteristics. [0003] The key of high-speed narrowband carrier technology lies in the research of modulation and demodulation technology. Orthogonal Frequency Division Multiplexing (OFDM) is a special multi-carrier signal modulation method....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B3/54H04L27/26
CPCH04B3/542H04L27/2601
Inventor 胡平冯佳豪王承民杨会峰王朋朋樊会丛单保涛刘涌李宏仲林宪平林榕李勇邵华
Owner STATE GRID CORP OF CHINA