DAS technology introduces carrier signals inside a building and re-transmits with the help of radios and antennas. On the same system, it supports multiple carrier networks. They are the ultimate solution for large deployments.
By developing wireless signal through a network of base station towers (BST), a carrier network work. When the signals are transmitted within the tower’s geographical area two-way communication happens where a phone can send the signals back. The satellites work for GPS, similarly BSTs creates a coverage footprint. Once you get to the outer edge, the overage weakens. As they move away from footprints the coverage gets dissipated.
There are two types of DAS: Passive DAS and Active DAS. Passive DAS captures the signal with the help of an antenna from outside the building, strengthens it with an amplifier, and then they are transmitted. They use copper coax and it is the best solution for smaller properties. On the other hand, Active DAS use carrier-provided BST to produce a cellular signal directly. The signal source is connected to the DAS head-end where the signal is sent to radio units via fiber optic cable. The remote unit sends the signal to antennas over coax. It’s great for buildings with varied sizes.
Traditionally, Active DAS are used in large venues such as shopping malls, casinos, and stadiums. It is broadly used over 500,000 square feet. Even though it has been initiated for a very simple reason of holding back the customers it is emerging as an eminent technology.