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OFDM (Orthogonal Frequency Division Multiplexing)-technique-based TOF (Terahertz-Over-Fiber) wireless communication system device and method

A technology of wireless communication over light and system devices, which is applied in transmission systems, multi-frequency code systems, electromagnetic wave transmission systems, etc., and can solve problems such as no compensation

Inactive Publication Date: 2011-09-28
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the dynamic nature of polarization mode dispersion (PMD), there is no effective way to compensate

Method used

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  • OFDM (Orthogonal Frequency Division Multiplexing)-technique-based TOF (Terahertz-Over-Fiber) wireless communication system device and method

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Embodiment Construction

[0054] The present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0055] Depend on figure 1 As shown, this embodiment proposes a terahertz wireless communication device based on OFDM technology, and the components and functions thereof are described as follows:

[0056] The central station 1 is used to generate a first-order sideband optical signal modulated with an OFDM signal;

[0057] A single-mode optical fiber 2, used to transmit a first-order sideband optical signal modulated with an OFDM signal;

[0058] Base station 3, for radiating OFDM terahertz signals;

[0059] Subscriber unit 4, for receiving and demodulating OFDM terahertz signal;

[0060] Single-mode laser 1-1, used to generate a single longitudinal-mode optical carrier of a specified wavelength;

[0061] The intensity modulator 1-2 is used to perform double-sideband modulation on a single longitudinal mode optical carrier of a specified wave...

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Abstract

The invention discloses an OFDM (Orthogonal Frequency Division Multiplexing)-technique-based TOF (Terahertz-Over-Fiber) wireless communication system device and method. The OFDM-technique-based TOF wireless communication system device comprises a central station, a base station and a subscriber unit, wherein the central unit is connected with the base station through a single mode fiber, the base station transmits OFDM terahertz wave signals generated by the central station through a high frequency antenna, and finally, the subscriber unit performs wireless receiving. The device and method disclosed by the invention can effectively solve the problems of dispersion during fiber communication and polarization mode dispersion, and meanwhile, the use ratio of channel band width can be improved, thereby realizing stable and long-distance communication.

Description

technical field [0001] The invention relates to a wireless communication system capable of realizing long-distance transmission of high-rate signals, in particular to a terahertz light-borne wireless communication system device and method based on OFDM (orthogonal frequency division multiplexing) technology. Background technique [0002] According to Edholm's law, the bandwidth demand for wireless communication doubles every eighteen months. In the past three decades, the development of wireless communication has confirmed this rule. According to the current wireless transmission capability, it can be inferred that the demand for wireless rate will reach more than 10Gbit / s in ten years. According to Shannon's theorem, to obtain such a high wireless transmission rate, the frequency of the carrier must reach more than 100G, thus entering the terahertz frequency band (0.1-10THz). Terahertz communication technology will be the main means of wireless communication in the future...

Claims

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Application Information

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IPC IPC(8): H04B10/18H04L27/26
Inventor 李瑛文双春陆顺斌郑之伟范滇元
Owner HUNAN UNIV
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