Application places and principles of wireless repeater

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Application places and principles of wireless repeater

When we do signal coverage in the field, there will be too much loss because the terrain or distance makes it difficult for the feeder to connect to the equipment.,A reasonable solution can be to use fiber-optic wireless repeater to replace the feeder that transmits radio frequency signals to achieve the connection. Optical fiber wireless repeater uses the characteristics of low optical fiber transmission loss, convenient wiring and suitable for long-distance transmission, and is used in large high-rise buildings.(Group), residential areas and other occasions with higher requirements,To solve the signal coverage inside and outside the large and super-large buildings, it is a repeater for optical signal transmission with the help of optical fiber.


According to the characteristics of repeater products and the needs of mobile communication networks, different geographical environments and applications, system solutions are also different, which require careful analysis and differential treatment. Signal isolation is particularly important for wireless repeaters. Wireless repeaters receive signals from space and necessarily require space signals to be as pure as possible. However, in an area with dense base stations, the difficulty of signal separation between different base stations or sectors will be greatly increased, and it is easy for repeaters to increase interference to the base station. Therefore, in areas with dense base stations, it is recommended to introduce wired signals as much as possible, such as optical fiber wireless repeater. Where there is no fiber optic repeater, only wireless repeaters can be used, but the main antenna must have sufficient directional selectivity.

According to various areas and application sites, due to the density of base stations and differences in user traffic, etc. The following principles for wireless repeater applications are recommended:

1,Urban dense areas. Due to the large number of users and the large number of base stations, there is generally no large-area signal blind area. The repeater is only used to solve the problem of blindness in a small area and signal coverage in buildings. In the case of optical fiber to the building has not yet been popular, it is appropriate to use wireless repeater. As the number of buildings increases, the number of repeater stations required will also increase, and a base station will be equipped with multiple repeater stations. However, the introduction of the repeater will inevitably cause interference to the base station. As the number of repeaters increases, so does the interference. In particular, the introduction of high-power repeater will greatly increase system interference. So it should be used in densely populated urban areas.,Use low power(1WThe following)Repeater.

2,The edge of the city.CDMAIn the early stage of network construction, due to the small number of base stations,High power wireless or fiber optic repeaters can be used. In urban fringe areas, the main problem is to solve the signal coverage. in areas where fiber has been laid,ShouldUse output power10WFiber optic repeater. In the absence of fiber resources, the wireless repeater can be used to extend the coverage, and the relatively pure source signal can be extracted by using the donor antenna with good directivity, and the output power is5 W/10 W, Equal to the output of the base station, achieving good coverage.

3,Suburbs and villages. Suburbs and villages mainly address coverage issues,In areas where fiber is laid,ShouldUsing high-power fiber optic repeater(10W/20W)Expand coverage. For areas that do not have fiber resources but can receive base station signals, wireless repeater can be used to solve the coverage problem. In special cases, the frequency shift radio repeater can also be used to increase the coverage distance.