Optical fiber distribution high-frequency intelligent double-output system

Abstract

The invention relates to an optical fiber distribution high-frequency intelligent double-output system. The system comprises an optical division device access unit and an optical division device far-end unit; the optical division equipment access unit comprises a first multi-frequency combiner, a second multi-frequency combiner and a first electric / optical converter, and the optical division equipment far-end unit comprises a second electric / optical converter, first to sixth power amplifiers, a first bridge, a second bridge, a third multi-frequency combiner, a fourth multi-frequency combiner and a double-output adjusting switch. According to the invention, the optical division device far-end unit can be flexibly adjusted to cover different areas and MIMO modes according to actual demands;and moreover, the probability of generation of adjacent frequency interference and intermodulation interference is overcome, and the 3dB combination insertion loss of the D-band 2.6 GHz signal is reduced, so that the coverage range of the D-band 2.6 GHz signal is equivalent to the coverage range of the 800-2400 AMhz signal.

Description

technical field [0001] The invention relates to an optical fiber distributed high frequency intelligent double output system. Background technique [0002] With the rapid development of modern mobile communication technology, 4G has basically realized the coverage of the entire network of operators. At the same time, 5G technology is becoming more and more mature, and it is about to be commercialized on a large scale. Accompanied by the substantial increase in the rate of mobile data services, the demand for data services has exploded, the user's communication habits have changed from traditional voice to data services, and areas with high traffic and high data have gradually shifted from outdoors to indoors. Therefore, it is particularly important to do a good job in the indoor distribution system. At present, the state vigorously advocates co-construction and sharing, energy saving and emission reduction in the communication industry. For some scenarios where the demand f...

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Problems solved by technology

[0006] (2) The possibility of multi-system amplification interference at the same level is high

[0009] When the D-band 2.6GHz high-frequency source is connected to the system, due to the difference in feeder loss between systems, for example, the difference between 900MHz and 2700MHz feeder loss is nearly doubled. The minimum coupling coefficient requirements of the port power are basically the same. Therefore, in order to consider the high link loss of the D-band 2.6GHz high-frequency source, the coverage distance of the low-frequency 900MHz and intermediate-frequency sources is shortened, and the investment in equipment is increased, as shown in Table 1.

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