The Distributed Antenna System (DAS) is a network of multiple antennas strategically placed within a building to ensure comprehensive wireless coverage indoors. This system can be either active or passive, depending on the design and requirements of the facility. Active DAS systems use optical signal distribution, while passive systems rely on coaxial cables and splitters for RF signal distribution. In a passive DAS setup, signals are distributed through coaxial cables, couplers, and power splitters, often using leaky coaxial cables instead of individual antennas. The choice between leaky cables and discrete antennas depends on factors like building layout, installation constraints, and coverage needs. Passive DAS systems are known for their cost-effectiveness and reliability, making them ideal for multi-operator and multi-service environments, including 3G, 4G, and even high-speed WLANs up to 2.5 GHz. One of the key advantages of passive DAS is its flexibility. It allows for tailored coverage based on specific building requirements, avoiding unnecessary signal loss and inefficiencies. As a result, many complex indoor coverage systems today are built using passive DAS solutions, which offer better scalability and lower maintenance costs compared to other alternatives. Compared to small, distributed indoor base stations like pico RBS, DAS provides a more efficient solution for indoor coverage. It increases the number of available trunks and transmission links, ensuring that wireless connections are always available throughout the building. This enhances spectrum efficiency and helps operators manage peak traffic more effectively. Additionally, a single RBS can cover an entire building via a single transmission line, reducing overhead and improving relay efficiency. DAS also enables operators to control and limit indoor coverage, minimizing interference with the macro cellular network. This leads to increased overall network capacity and better user experience. For WCDMA systems, DAS allows multiple buildings to share a single RBS, with optical signal distribution transmitting RF signals over fiber. Each building then uses a high-power optical remote unit to convert the signal back to RF and distribute it through a coaxial antenna network. Deploying a DAS solution offers several benefits, including improved capacity, reduced transmission costs, and lower investment in wireless access networks. By sharing transmission paths and leveraging statistical multiplexing, operators can optimize resource usage. Moreover, since dark fiber leasing is often cost-effective, this further supports the economic viability of DAS systems. Ericsson has been a pioneer in implementing DAS solutions for both indoor and outdoor coverage since 1999. Their approach integrates indoor and outdoor signals to minimize interference and maximize the utilization of network equipment. By focusing on efficient network design, Ericsson ensures that indoor coverage is optimized without excessive investment, delivering superior performance across 2G, 3G, and beyond. D-subminiature Connector,D-Sub Connector,Power D-Sub,D-Sub Power Connector,High Power D-Sub Connector,db9,db15,db25,ip67 D-Sub,waterproof D-Sub connector,D-Sub connector female,D-Sub male connector Dongguan Yiyou Electronic Technology Co., Ltd. , https://www.dsubminiature.com