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INTERDIGITAL'S B-CDMA TECHNOLOGY TO BE TESTED ON UNITED STATES CELLULAR'S SYSTEM

 KING OF PRUSSIA, Pa., Dec. 28 /PRNewswire/ -- InterDigital Communications Corporation (AMEX: IDC) announced today that United States Cellular Corporation (AMEX: USM) will test InterDigital's Broadband Code Division Multiple Access (B-CDMA) technology as a cellular overlay to their existing network.
 The system will be tested in the United States Cellular's Iowa network in the first quarter of 1993. The system will utilize multiple cell sites in the network which currently provides service to more than 40,000 people.
 InterDigital holds 14 B-CDMA patents and successfully field tested the technology last year in an FCC PCS/PCN trial. "B-CDMA is totally compatible with analog cellular and TDMA digital cellular in that it can be used as a system overlay in the same cellular spectrum as well as the new PCS/PCN spectrum," said William W. Erdman, president and chief executive officer of InterDigital. "In contrast Narrowband-CDMA requires operators to rip apart their current systems to allocate a part of the spectrum to just Narrowband-CDMA making it incompatible with all current standards and losing the ability to use these channels for current customers."
 "United States Cellular is pleased to test InterDigital's B-CDMA technology in its markets," said H. Donald Nelson, president and chief operating officer of United States Cellular. "We strive to give our customers the best service possible. InterDigital's technology will allow us to not only offer state-of-the-art digital cellular service to our customers but personal communication service (PCS) as well."
 United States Cellular is the nation's ninth-largest cellular telephone company and owns or has the right to purchase cellular interests in licenses in 73 Metropolitan Statistical Areas ("MSAs") and 104 Rural Service Areas ("RSAs"). The company is 83 percent owned by Telephone and Data Systems, Inc. ("TDS").
 InterDigital, a world leader in TDMA and B-CDMA wireless digital technology and products, currently holds 43 U.S. patents filed or issued in more than 30 foreign countries. Its Ultraphone system has been ordered or installed in more than 157 locations worldwide.
 /delval/
 -0- 12/28/92
 /CONTACT: David L. Smith, vice president of InterDigital, 215-278-7831/
 (IDC USM)


CO: InterDigital Communication Corporation; United States Cellular
 Corporation ST: Pennsylvania IN: TLS SU:


CC -- PH017 -- 0066 12/28/92 12:43 EST
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Publication:PR Newswire
Date:Dec 28, 1992
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