DAS Distributed Antenna System: Accelerating the Future Development of Wireless Networks

Modern environments such as office buildings and sports venues often need to improve cellular network coverage performance to provide a seamless connection experience. However, large buildings, hospitals, and sports venues today often use thick steel, concrete, and energy-saving glass walls, which can obstruct cellular signal transmission, resulting in poor cell phone signal reception for people within them. Additionally, high-rise buildings might suffer from high levels of RF interference from nearby cell towers, further degrading signal quality. When there are too many people in compact spaces, systems can become overcapacity, which is another reason for poor cell signal reception. These factors together lead to suboptimal cellular phone reception. Integrated DAS (Distributed Antenna Systems) can play a key role in providing high-quality cellular services and accelerating the future development of wireless networks.

Advantages of DAS Distributed Antenna Systems

When a wireless intercom system needs to provide comprehensive coverage in large buildings or wide areas, DAS (Distributed Antenna Systems) are an ideal solution.

DAS systems distribute signals to various areas within a building through multiple antenna nodes, ensuring stable communication signals whether in basements, stairwells, or corners of high-rise buildings.

Such DAS systems are very suitable for use in airports, stadiums, large shopping malls, and other venues because they ensure good communication quality even when many users are simultaneously using wireless intercom systems.

DAS systems usually need to be closely integrated with the structure of the building, so detailed scenario evaluation and planning are required during design and implementation.

The Role of Indoor DAS

Indoor DAS is indoor wireless enhancement system that provides reliable mobile coverage for people inside buildings. Indoor DAS consists of networks of independent antenna nodes that extend cellular range and enhance signal strength, enabling excellent cellular connectivity in high-density indoor venues. Despite indoor DAS deployment methods varying, typical deployment may involve direct connections of the following components: donor antenna, RF signal repeater, the wireless BTS, fiber optic distribution front end, RAU, and multiple strategically deployed ceiling antennas inside the building.

Main Trends in Enhancing Indoor Wireless Coverage

Firstly, only using RF boosters or BDA products, which are simple signal repeaters (also known as passive DAS systems); secondly, using a complete active DAS system.

Both passive and active DAS signal distribution systems can be used to improve wireless coverage and capacity inside buildings, with selection made based on actual conditions. A hybrid DAS system is a DAS that contains both passive and active solutions simultaneously.