IDAS Solution Indoor Distribution Antenna System
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.
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.
Different Applications Small Small Building, A lot of traffic Quantity of antennas < 20 pcs
Different Applications Medium Apartment Buildings (Residential, Commercial) A lot of traffic Quantity of antennas is around 100 pcs
Different Applications Large Large buildings, Shopping malls, Airports High traffic Quantity of antennas > 150 pcs
Wireless Repeater IDAS
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
Wireless Repeater IDAS system
BTS-IDAS system BTS will be used instead of repeaters in the cases that repeater can not provide the sufficient traffic.
Passive IDAS system
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
Passive IDAS system
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
Active IDAS system
Active IDAS system Features Application high traffic Large system coverage Application Large buildings, Urban Residential, Shopping malls Stadiums, Metro Stations, Airports
Multiple Band Active IDAS GSM 900 GSM 1800
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
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