High-stability common-frequency optical fiber amplifying work method and high-stability common-frequency optical fiber amplifying station

Abstract

The invention discloses a high-stability common-frequency optical fiber amplifying work method and a high-stability common-frequency optical fiber amplifying station which comprises modules and microprocessor work software, wherein the modules comprise a power supply, an antenna feed system, a wireless receiver, a wireless transmitter, an optical transmission receiver, an optical transmission sender, an upper programmable transducer, a lower programmable transducer, a sending power divider, an electronic switch, a microprocessor and the like. The invention realizes that field densities of a plurality of optical fiber amplifying stations are covered and interwoven mutually, has the characteristics of reliable coverage, little common-frequency interference and no feedback self-excitation, and is suitable to the wireless communication relay transmission.

Description

technical field [0001] The invention relates to a wireless communication relay transmission technology, which is suitable for the relay transmission of a wireless communication system 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 terminal machine converts the wireless received signal into an optical signal and transmi...

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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 terminal 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 in the same frequency mode; the main problem is that for the relay system composed of multiple optical fiber repeaters , when the field strength coverage of adjacent optical fiber repeaters is interlaced, usually more than one optical fiber repeater receives the wireless carrier frequency signal transmitted by the same mobile station. In this case, if the received The optical fiber repeaters of the same carrier frequency signal will forward the received carrier frequency signal, which will cause co-channel interference and feedback self-excitation, and the mobile station will also receive signals from different optical fiber repeaters in the coverage interweaving area at the same time. Multiple same-frequency signals are transmitted, and each repeater generates beat-frequency interference due to the carrier frequency difference of the transmitted carrier frequency signals, but in practical applications, the field strength coverage of the wireless relay system needs to be interleaved to ensure coverage reliable

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