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Analysis of the Advantages of Distributed Antenna System

Views: 15     Author: Site Editor     Publish Time: 2019-11-01      Origin: Site


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The DAS system provides operators with a more efficient indoor coverage solution than small, distributed indoor base stations. For example, it can increase the number of trunks on the wireless interface and the transmission link, so each wireless link is readily available anywhere in the building. This in turn increases spectrum efficiency and allows operators to respond to peak communications. RBS only needs one transmission line to cover the entire building. This not only greatly improves the transmission relay efficiency, but also reduces the transmission overhead of each RBS. In addition, the DAS solution also allows operators to control and limit the coverage within the building to reduce interference with the macro cellular network, thereby increasing the total capacity of the network.

In addition, DAS is an efficient solution for providing indoor coverage for WCDMA. In this solution, multiple buildings or indoor areas share the same RBS. This RBS is connected to an optical signal distribution system that converts the RF signals into optical signals that are then distributed over fiber to the various buildings. The high-power optical remote unit in each building is responsible for converting the optical signal back to the RF signal and then distributing the signal to each location in the building through a coaxial cable antenna network. The benefits of deploying a DRS solution include increasing capacity by increasing the number of trunks, reducing transmission costs, and reducing the investment cost of the wireless access network.

In addition, the DAS solution increases the number of trunks for wireless interfaces and transmission links, thereby increasing spectral efficiency because each wireless channel is readily available in every relevant building. Not only that, but the full capacity of the RBS can be used in any building or location, allowing operators to more easily cope with local traffic peaks (for example, when users eat lunch at a restaurant, or when they are sheltering from the rain).

Reducing transmission costs is also a major feature of DAS solutions, and operators can use statistical multiplexing to reduce transmission costs. Many users share the same transmission path and converge on the same site, because in many places, the lease cost of dark fiber is relatively low. Because macro sites share macro RBS with dedicated indoor coverage sites, the overall cost of a DRS solution is lower than other solutions compared to other similar solutions. It will enable operators to invest less in wireless access networks.


At present, IFLY adopts DAS solution in many domestic and international indoor coverage projects. IFLY's DAS solution demonstrates IFLY's leading position in this field in the network design stage. IFLY's powerful network design capabilities, we will consider indoor and outdoor signals to minimize interference between indoor and outdoor networks, so that a limited indoor coverage can achieve the best use, maximize the use of network equipment, reduce investment.

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