Optical fiber direct amplification and frequency conversion repeater and working method

Abstract

The invention proposes a fiber optic repeater and frequency conversion relay and operation method thereof; wherein, the fiber optic repeater and frequency conversion relay is composed of a wireless transceiver module, a duplexer, a photoelectric conversion module, optical fibers and an optical splitter; the invention is characterized in that the fiber optic repeater and frequency conversion relay comprises a transmission control module, two line equalization delays, two wireless transceiver loops, a carrier frequency converter and a switching matrix, and is applicable to wireless communication relay transmission in conventional wireless communication system; so the fiber optic wireless relay system is ensured to provide wireless communication relay transmission service for wireless transceiver users in arbitrary position within the relay range; meanwhile, the fiber optic repeater and frequency conversion relay and operation method have small interference and are applicable to various covering requirements.

Description

technical field [0001] The invention is a wireless communication relay transmission technology, which is applicable to the wireless communication relay transmission of conventional wireless communication systems, and belongs to the technical field of wireless communication. Background technique [0002] In the currently applied optical fiber wireless relay system, fiber optic direct relay technology is widely used, and its system structure is usually in the form of a near-end machine connected to one or more remote machines through optical fiber lines. The wireless communication relay and forwarding function can be realized between the end machines. The working method is that the near end machine converts the wireless received signal into an optical signal and transmits it to the far end machine through an optical fiber, and then restores it into an electrical signal and sends it out in the same frequency mode. The end machine converts the wireless received signal into an op...

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Problems solved by technology

[0002] In the currently applied optical fiber wireless relay system, fiber optic direct relay technology is widely used, and its system structure is usually in the form of a near-end machine connected to one or more remote machines through optical fiber lines. The wireless communication relay and forwarding function can be realized between the end machines. The working method is that the near end machine converts the wireless received signal into an optical signal and transmits it to the far end machine through an optical fiber, and then restores it into an electrical signal and sends it out in the same frequency mode. The end machine converts the wireless received signal into an optical signal and transmits it to the near-end machine through optical fiber, then restores it to an electrical signal and sends it out at the same frequency; the main problem is that the communication between the remote machines cannot realize mutual relay and forwarding Function, that is: when there are multiple wireless transceiver users near multiple remote machines that need to communicate with each other, such a relay communication system cannot provide relay transmission services for them, and because of the direct relay mode, The co-channel interference generated by multiple repeaters and the interference caused by fiber delay have a greater impact, but in actual production applications, it is necessary for the fiber optic wireless relay system to be able to transmit and receive signals for multiple wireless channels within the relay coverage area. Provide relay transmission services between machine users, and need to reduce co-channel interference as much as possible, and are suitable for relay transmission under various coverage requirements

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