Multi-service access digital-analog hybrid networking all-optical distributed system

Abstract

The invention relates to a multi-service access digital-analog hybrid networking all-optical distributed system. The multi-service access digital-analog hybrid networking all-optical distributed system comprises a digital access unit, a digital extension unit and an analog zoom-out unit, wherein the digital access unit and the digital extension unit are provided with signal forwarding connections; a signal allocation port of the digital extension unit is provided with an analog zoom-out unit connection; the digital access unit comprises a first radio-frequency processing unit (U1) and a first digital processing unit (U2) which are connected to construct an uplink and a downlink; the digital extension unit comprises a second digital processing unit (U4), a second radio-frequency processing unit (U5) and a first analog photoelectric conversion unit (U6) which are connected to construct an uplink and a downlink; and the analog zoom-out unit comprises a second analog photoelectric conversion unit (U8), a third radio-frequency processing unit (U9) and an antenna unit (U10) which are connected to construct an uplink and a downlink. The multi-service access digital-analog hybrid networking all-optical distributed system is a novel distributed system which can support a plurality of services such as 2G services, 3G services, TDDLTE (Time Division Duplexing Long Term Evolution) services and FDDLTE (Frequency Division Duplexing Long Term Evolution) services, and is applied to deep coverage of wireless communication signals such as 2G signals / 3G signals / 4G signals.

Description

technical field [0001] The present invention relates to a digital-analog hybrid network all-optical distributed system for multi-service access, in particular to an indoor and outdoor digital-analog hybrid network optical fiber multi-service distributed system, which is mainly used in urban villages, large-scale The invention relates to deep coverage and networking of multi-service signals in special scenarios such as venues, office buildings, multi-network co-site and multi-network different-site, etc., and the present invention belongs to the field of communication. Background technique [0002] The digital optical fiber remote system has been widely used in recent years due to its advantages of flexible networking and system gain that does not change with optical path loss, covering 2G, 3G, 4G and other operating networks. Due to the rapid development of wireless communication, it has only been more than ten years from the first generation of analog mobile communication...

AI Technical Summary

Problems solved by technology

[0003] However, due to the serious attenuation and shielding effect of buildings on wireless signals, in some large indoor venues, office buildings, underground garages and urban villages, there are many blind spots that mobile phone users cannot use

At the same time, with the growth of mobile services, due to the relatively low downlink rate of 2G and 3G services, it is difficult to meet the experience perception of current smart terminal users for data services

[0004] In terms of installation and networking, the traditional digital optical fiber system is implemented by building a feeder network. The multi-frequency signal is fused to the antenna feeder to achieve coverage through passive combining devices. The radiation problem of the antenna has caused panic among people and led to the Many network construction systems in commercial communities and office buildings were dismantled due to complaints

Although the all-digital optical fiber distribution system developed on this basis can solve the above problems, because the remote end uses digital optical fiber for transmission processing, the remote end must have digital processing chips such as FPGA, digital-to-analog conversion AD, DA and other chips , leading to relatively high power consumption and cost at the remote end, so that the economic benefits in the entire system network deployment are relatively low

Images