Multi-path output system of low-intermodulation POI platform

Abstract

The invention discloses a multi-path output system of a low-intermodulation POI platform. The system comprises a combining device, an intermediate conversion device and a multi-path output device, wherein the combining assembly comprises a plurality of multi-path input combining assemblies; the multi-path input combining assemblies are connected with the input end of the intermediate conversion device, the multi-path output device comprises a plurality of output assemblies, each output assembly is respectively connected with the output end of the intermediate conversion device, and each outputassembly is used for outputting multi-path signals. The invention relates to the multi-path output system of the low-intermodulation POI platform. By means of the combining device and the multi-pathoutput device, existing two-path output can be changed into multi-path output, so the total power of output signals of POI output ports is reduced, the intensity of reflection intermodulation interference signals of a passive distribution system is reduced, and a POI platform can have access to more wireless communication systems.

Description

Technical field [0001] The invention relates to the field of multi-system combining devices for mobile communication networks, and in particular to a multi-channel output system of a low intermodulation POI platform. Background technique [0002] With the development of mobile communications, the use of systems and frequency bands continues to increase, and co-construction and sharing has gradually become an industry trend. However, due to the use of more high frequency bands and more carriers, the total power after the combination continues to increase, making mutual Tuning interference is getting more and more serious. Traditional POI greatly reduces system performance due to a large amount of uplink intermodulation interference and affects user perception. As a result, operators are becoming more and more dissatisfied with the performance of multi-system integration, making passive room sub-applications gradually replaced by digital room sub-systems, and digital room sub-syst...

AI Technical Summary

Problems solved by technology

Traditional POI greatly reduces system performance and affects user perception due to a large amount of uplink intermodulation interference

As a result, operators are increasingly dissatisfied with the performance of multi-system combination, and the application of passive indoor distribution is gradually replaced by digital indoor distribution. However, digital indoor distribution has problems such as high cost and difficult maintenance, which makes operators, especially China Tower's indoor distribution The co-construction and sharing business is facing greater challenges

[0003] However, existing POIs can be combined at most and then divided into two paths for coverage (such as figure 1 As shown), the output power of the POI output port is very large, and the passive distribution system after POI is difficult to guarantee the quality of components and engineering processes, and high reflection and intermodulation interference signals often appear, seriously affecting the uplink coverage quality of the communication system

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