Millimeter wave generation method and rof system
A filter and modulator technology, applied in the field of communication, can solve the problems of high cost of millimeter wave generation and complex base station system
Active Publication Date: 2017-12-05
CHINA UNITED NETWORK COMM GRP CO LTD
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[0004] The present invention provides a method for generating millimeter waves and an ROF system, which are used to solve the problems of high cost of generating millimeter waves and complex base station systems in the prior art
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[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0035] figure 1 A schematic structural diagram of the ROF system provided for an embodiment of the present invention, such as figure 1 As shown, the ROF system provided in this embodiment includes:
[0036] Central station 1 and the base station 3 that is connected with described central station 1; Wherein,
[0037] The central station 1 i...
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The invention provides a millimeter wave generation method and an ROF system. The ROF system comprises a central station and a base station, wherein the central station comprises a first laser, a second laser, a first coupler, a first modulator connected with the first coupler, a radio-frequency signal source, a first filter, a first photoelectric detector, a second coupler, a DC block, a second modulator, a third modulator, a third coupler, a second filter connected with the third coupler, a third filter connected with the second filter, and an optical fiber amplifier connected with the third filter; the radio-frequency signal source and the first filter are connected with the first modulator; the first photoelectric detector and the second coupler are connected with the first filter; the DC block is connected with the first photoelectric detector; the second modulator and the third modulator are connected with the DC block and the second coupler respectively; the third coupler is connected with the second modulator and the third modulator; and the base station comprises a second photoelectric detector. The millimeter wave generation method and the ROF system have the advantages that the complexity of the base station is reduced; and generated millimeter waves are relatively high in degree of purity and quite low in error ratio.
Description
technical field [0001] The present invention relates to the technical field of communication, in particular to a method for generating millimeter waves and an ROF system. Background technique [0002] Wireless communication and broadband communication are the future development directions of the communication industry. Radio over fiber (ROF) technology utilizes the advantages of optical fiber and high-frequency radio waves to realize large-capacity, low-cost RF signal optical fiber transmission and ultra-wideband Wireless access solves the problem that high-frequency millimeter-wave signals cannot achieve long-distance communication due to fiber loss and dispersion, and has breakthrough significance for the future communication field. [0003] The generation method of millimeter wave in ROF technology is the focus of this technology. At present, there are many ways to generate millimeter waves in ROF technology, mainly including: direct modulation technology, optical hetero...
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IPC IPC(8): H04B10/2575H04B10/50H04B10/548
CPCH04B10/25759H04B10/5053H04B10/548
Inventor 许丽丽
Owner CHINA UNITED NETWORK COMM GRP CO LTD