1. IDAS Solution Indoor Distribution Antenna System

2. Definition of IDAS Indoor Distribution Antenna System
Distribute mobile communication signal inside buildings to provide coverage for the blind areas & shadow areas
Provide steady quality signals to collect the indoor mobile traffic.

3. Why IDAS?
In 2G network − About 70% of Voice traffic come from Indoor. − About 30% of Voice traffic come from outdoor. In 3G network. − About 65% of Data service come from Indoor. − About 35% of Data service come from outdoor.

4. Different Applications
Small
Small Building,
A lot of traffic
Quantity of antennas < 20 pcs

5. Different Applications
Medium
Apartment Buildings (Residential, Commercial)
A lot of traffic
Quantity of antennas is around 100 pcs

6. Different Applications
Large
Large buildings, Shopping malls, Airports
High traffic
Quantity of antennas > 150 pcs

7. Wireless Repeater IDAS

8. Wireless Repeater IDAS
Features
Low traffic
Sample system coverage
Consider
Easy & short time Installation
Low investment of CAPEX*
Wireless Access
Application
Small Building, Villa…
CAPEX* Capital Expenditure

9. Wireless Repeater IDAS system

10. BTS-IDAS system
BTS will be used instead of repeaters in the cases that repeater can not provide the sufficient traffic.

11. Passive IDAS system

12. Passive IDAS system Features Application Consider Medium traffic
Sample system coverage
Application
Medium buildings, basement
Consider
Limited BTS output power
BTS room required
Capacity low efficient

13. Passive IDAS system

14. Disadvantages of Passive IDAS
BTS Output power is not enough.
A lot of RF loss is in feeder transmission.
Cost of RF feeder is so high.
To solve these problems we can use Active IDAS system

15. Active IDAS system

16. Active IDAS system Features Application high traffic
Large system coverage
Application
Large buildings, Urban Residential, Shopping malls
Stadiums, Metro Stations, Airports

17. Multiple Band Active IDAS
GSM 900
GSM 1800

18. Multiple Band Active IDAS
Components & Antenna
Passive component and feeder
suitable for 800~2500MHz
Combiner
Dual or Multiple band access
Equipment
GSM900 MHz Optical Repeater
GSM1800 MHz Optical Repeater
3G 2100 MHz Optical Repeater

19. Thank you