In closed-loop environments such as tunnels and basements, wireless signals are often severely hindered, resulting in communication devices such as mobile phones and wireless network devices not working properly. To solve this problem, engineers have developed various signal amplification devices. These devices can receive weak wireless signals and amplify them, enabling wireless devices to operate normally in a closed-loop environment. Below, we will introduce some common signal amplification devices used in tunnels and basements.
1. Distributed Antenna System (DAS)
Distributed antenna system is a commonly used signal amplification scheme, which introduces outdoor wireless signals into the indoor environment by installing multiple antennas inside tunnels and basements, and then amplifies and propagates wireless signals through distributed antennas. The DAS system can support multiple operators and multiple frequency bands, and is suitable for various wireless communication systems, including 2G, 3G, 4G, and 5G.
2. Gain type signal amplifier
The gain type signal amplifier achieves signal coverage by receiving and amplifying weak wireless signals, and then transmitting them again. This type of device typically consists of an outdoor antenna (receiving signals), a signal amplifier, and an indoor antenna (transmitting signals). The gain type signal amplifier is suitable for small basements and tunnels.
3. Fiber optic repeater system
Fiber optic regeneration system is a high-end signal amplification solution that converts wireless signals into optical signals, which are then transmitted underground or inside tunnels through optical fibers, and then converted back to wireless signals through fiber optic receivers. The advantage of this system is that it has low signal transmission loss and can achieve long-distance signal transmission and coverage.
4. Small Cell
A small base station is a new type of signal amplification device that has its own wireless communication capability and can directly communicate with mobile phones and other wireless devices. Small base stations are usually installed on the ceiling of tunnels and basements, providing stable wireless signal coverage.
The above are some common signal amplification devices used in tunnels and basements. When selecting a device, it is necessary to consider factors such as actual coverage requirements, budget, and device compatibility to choose the most suitable device for oneself.
Original article, source: www.lintratek.com Lintratek mobile phone signal booster, reproduced must indicate the source!
Post time: Oct-30-2023