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ADC WIRELESS MICROCELL USES FIBER TO FILL CELLULAR “BLACK HOLES”

ADC Wireless Systems has introduced its T1 CityCell microcell, a fiber-fed radio frequency extension device designed to increase coverage and capacity in cellular phone systems.

CityCell extends service to difficult coverage areas such as “black holes” or to structures such as shopping malls, convention halls and underground garages, said ADC.

The microcell, which serves Advanced Mobile Phone Service cellular users, transports baseband signals between a donor cell and a remote site in a digital format over standard T1 digital transmission facilities, the company said.

“This system is a breakthrough in cell site extension since this is the first application of transporting digitized RF over common T1 facilities,” said Joe Roissier, director of marketing for ADC. “The potential for savings in operating costs for our customers is enormous.”

The company said coverage can be optimized for each site by locally or remotely adjusting both downlink and uplink path gains as well as per-channel output power. Full alarm capability is presented at the host end via dry contacts and/or serial data.

ADC said it is working on developing an E1 version of the product for use in Europe as well as a T1 product that is compatible with Interim Standard 136 Time Division Multiple Access technology.

“We listened to our customers and kept them involved throughout the development process,” said Roissier.

“This is a prime example of our ability to engage in constructive partnerships with our customers to deliver the solutions they need in the shortest possible time frames.”

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