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Multi frequency optical millimeter wave generating device and related receiver

An optical millimeter wave and generation device technology, which is applied in electromagnetic receivers, wavelength division multiplexing systems, electromagnetic wave transmission systems, etc., can solve the problems of increasing the cost of optical fiber wireless communication systems, and achieve the effect of saving optoelectronic devices and reducing costs

Inactive Publication Date: 2007-08-29
HUNAN UNIV
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AI Technical Summary

Problems solved by technology

However, in the currently proposed schemes, one modulator can only generate optical millimeter wave signals of one frequency. To generate optical millimeter wave signals of multiple frequencies, only multiple optical modulators can be used, thus increasing the cost of the optical fiber wireless communication system.

Method used

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  • Multi frequency optical millimeter wave generating device and related receiver
  • Multi frequency optical millimeter wave generating device and related receiver

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Embodiment Construction

[0046] The present invention will be described in detail below in conjunction with specific experimental examples and accompanying drawings.

[0047] As shown in Figure 1, it is a multi-frequency optical millimeter wave generating device. it includes:

[0048] The multi-frequency radio frequency sine wave signal source 1 has a plurality of radio frequency sine wave signal sources, which respectively generate radio frequency sine wave signals with frequencies f1...fn, where n is the number of radio frequency signals.

[0049] The data signal source 2 has multiple data signal sources, respectively generating n-channel data signals;

[0050] The electric mixer 3 has a plurality of electric mixers, which respectively mix each channel of radio frequency sine wave signals with corresponding data signals. Where n is a finite number, determined according to actual needs. For example, if n=4, there are four channels of signals, correspondingly four channels of radio frequency signal...

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Abstract

Belonging to technical area of Radio-on-Fiber communication system, the invention discloses multi-frequency light millimeter wave (MLMW) generation device and corresponding receiver. MLMW generation device carries out mixing multiplepath radio sine wave signal and corresponding multichannel data signals. Then the coupled multichannel signals drive light modulator to modulate light carrier so as to obtain MLMW. MLMW receiver is in use for turning the received MLMW signals to multi-frequency electric millimeter wave signals, next divides them into multiplepath unifrequent electric millimeter wave signals, and then downloads the data signals. Being applicable to full duplex optical fiber wireless communication system, the invention generates MLMW signals by using only one light modulator. Features are: high feasibility, and saving cost of system.

Description

(1) Technical field [0001] The invention belongs to the technical field of optical fiber-wireless (Radio-over-Fiber, abbreviated as ROF) communication system. (2) Background technology [0002] The communication frequency adopted by the future UWB wireless communication technology will extend to the millimeter wave band. However, there are currently two important factors that limit the development of millimeter-wave communication. One is that the transmission loss of millimeter-wave signals in the air is too large, so the transmission distance is too short. The other factor is that millimeter-wave communication devices are too expensive, which is not conducive to personal correspondence. A fiber-over-fiber communication system (Radio-Over-Fiber, ROF for short) can solve the above problems. The ROF system includes a central station (Central Station, abbreviated as CS), an optical fiber link and a base station. The central station generates optical millimeter waves and uplo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/155H04B10/158H04J14/02H04B10/60
Inventor 余建军陈林
Owner HUNAN UNIV
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