Distributed Antenna System (DAS) Design Solutions
Firstco offers wireless Communications solutions in the following areas:
Firstco offers Distributed Antenna System (DAS) design solutions to enable Private Mobile Radio (PMR) and cellular terminals to operate seamlessly throughout buildings, tunnels or any other complex. Firstco are vendor independent and therefore review and choose the most reliable equipment from the market to suit your needs.
A DAS solution has the following attributes:
- Guaranteed Coverage
- A building or complex façade may attenuate external signals and prevent reliable operation of wireless equipment. A DAS will re-broadcast within the building thereby eliminating this problem.
- External signals cannot penetrate into basements, tunnels and metal clad corridors. A DAS will re-broadcast within the building thereby eliminating this problem.
- High Capacity
- Buildings may contain a large number of cellular and PMR users requiring the addition of base station and other equipment to support them. A DAS will ensure that the users will preferentially associate with this equipment ensuring that nearby base stations do not become overloaded.
- Integrated Solution
- The large number of operators and services can result in problems of management, control and maintenance. A DAS managed by a single body will ensure operator equipment is placed in a single location. These operators will not have physical access to other parts of the DAS.
- Traditional systems have operator equipment installed at many locations within buildings resulting in issues of power, space, access and cooling. A DAS will eliminate duplicated elements of traditional systems by the use of single antenna infrastructure.
- Installation of several antenna systems can result in architectural design problems. A DAS system will minimise this equipment and may result in the system being more aesthetically pleasing by minimising visual intrusion and accommodation requirements.
- Indoor wireless distribution antenna systems are complex and expensive to install. A DAS can result in a lower cost per operator as its costs may be divided amongst them.
- Traditional systems result in different levels of coverage for different operators due to different positioning of antennas and feeders. An Integrated Building DAS (IBDAS) will ensure all operators will have equal coverage thereby eliminating discrimination.
A DAS consists of active and passive components to amplify, filter and radiate Radio Frequency (RF) signals throughout its area of coverage. These include:
- Passive Radiating Infrastructure - Radiating cable, antennas, couplers, splitters, combiners and associated equipment required for the transmission and reception of radio signals.
- Multi Service Combining - The combining systems form the hub of the DAS and enables several systems to be combined to enable effective transmission of the RF system.
- Active RF transmission and amplification system.