Fiber Distributed Antenna System (FDAS)
The Andrew ION™ Intelligent Optical Network (formerly MMR and Britecell® products) provides an optimized, easy-to-scale, fiber-based distributed solution for indoor and outdoor applications. Homogeneous coverage and sufficient capacity can be provided from car park through stairwell to office or exhibition hall with maximum QoS (quality of service) and GoS (grade of service).
Wireless operators may choose from a wide variety of power levels and other features to maximize coverage and quality while optimizing cost. For example, in a high rise building, capacity and coverage may be shaped by creating a distribution system that allows each floor to share the capacity of other floors with a low power ION-B (formerly Britecell), Cell-Max™ indoor antennas, and RADIAX® radiating feeder cable.
All units interface to A.I.M.O.S., Andrew's Integrated Network Operating System (OMC).
As shown here, indoor confined horizontal spaces may be covered with an ION-B. This dedicated, self-contained, low power transport system with fiber backhaul is quick and easy to install where spot coverage or additional capacity is needed. Remote dc power is often deployed with this type of system to minimize installation costs and provide backup in case of power outages.
ION-M (formerly MMR) is ideal for more difficult environments. For example, in outdoor areas where zoning is difficult, ION units may be deployed almost anywhere and are easily hidden in street furniture, ducts, lamp poles, trash cans, street signs, street lights, or building walls.
ION Intelligent Optical Network Systems
Power Class |
Sub-Pico 10—100 mW |
Pico 0.1—1.0 W |
Micro 1—10 W |
Macro 20—40 W |
| Band | Single or Multiband for 2G and 3G networks | Single or Multiband for 2G and 3G networks | Single or Multiband for 2G and 3G networks | Single or Multiband for 2G and 3G networks |
| Frequency | 380—2500 MHz | 380—2500 MHz | 380—2500 MHz | 380—2500 MHz |
| Typical Architecture | FTTA (fiber to the antenna): Applications that will cover many small enclosed areas | HFC and FTTF(hybrid fiber coax) and (fiber to the floor): Applications with vertical fiber and horizontal coax distribution | HFC and FTTB (hybrid fiber coax) and (fiber to the building): Applications with fiber for the backbone and coax for vertical and horizontal distribution | FTTB and RAF (fiber to the building) and (remote antenna fiber): Fiber movement from a remote source to a single high power antenna |
| Application Examples | Retail stores, small offices, shopping malls, skyscrapers, convention centers, hospitals | Skyscrapers, convention centers, Hospitals, airports and car parks, shopping malls, subway access | Airports and car parks, shopping malls, subway access, subway tunnels, campuses, street level coverage | Subway tunnels, campuses, street level coverage, building and tower tops, railroads, rural highway |