Optical antenna system and radio frequency covering device thereof

Abstract

The invention relates to an optical antenna system and a radio frequency covering device thereof. The system comprises a radio frequency access subsystem and an optical antenna subsystem which are connected through an optical fiber. The radio frequency access subsystem comprises a first digital signal processing module, at least one duplexer and an up / down frequency conversion module connected between the first digital signal processing module and the duplexer. The optical antenna subsystem comprises a signal distribution device and at least one radio frequency covering device which are connected through an optical fiber. The signal distribution device comprises a second optical port, a third optical port, a fourth optical port and a second digital signal processing module and a first wavelength division multiplexing / demultiplexing unit which are sequentially connected from the second optical port to the third optical port. The radio frequency covering device comprises a fifth optical port, a sixth optical port and a second wavelength division multiplexing / demultiplexing unit, a radio frequency processing module and a dual polarized antenna module which are sequentially connected from the fifth optical port. The system can conduct synergic covering with a traditional covering network and improves network covering depth.

Description

technical field [0001] The present invention relates to a mobile communication signal coverage system, and more particularly, to an optical fiber antenna system and a radio frequency coverage device thereof. Background technique [0002] After years of construction and development, the mobile communication coverage network has achieved great results. But there are still some difficult scenarios: for example, there are many difficulties in the approval of the site for the villa, the transmission and laying of the urban village, the selection of the site for the shops along the street, and the coordination of the property. , transmission laying difficulties and other reasons are often unable to implement. In principle, distributed systems can be deployed in hotels and residential areas, but for the target area that really needs to be covered—indoors, there are often blind spots and weak coverage areas of the signal. The dome structure of large venues has long transmission dis...

AI Technical Summary

Problems solved by technology

However, there are still some difficult scenarios: for example, there are many difficulties in the approval of the site of the villa, the transmission and laying of the village in the city, the selection of the site of the shop along the street, and the coordination of the property. , transmission and laying difficulties and other reasons are often unable to implement

In principle, distributed systems can be deployed in hotels and communities, but for the target area that really needs to be covered—indoors, there are often signal blind spots and weak coverage areas, and the long transmission distance and large transmission loss of the dome structure of large venues limit the transmission. Traditional systems often cannot effective coverage

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