To: Eric L who wrote (80544 ) 9/16/2000 10:38:21 PM From: Ruffian Read Replies (1) | Respond to of 152472 This Has A little Dust On It> FOR RELEASE FRIDAY, SEPTEMBER 23, 1994 Qualcomm and AT&T test CDMA air interference for PCS networks SEATTLE -- Qualcomm Inc. and AT&T Friday announced the results of laboratory and field analysis of CDMA (Code Division Multiple Access) performance for PCS (Personal Communications Services). This analysis, referred to as a link budget comparison, shows that CDMA -- at a minimum -- provides at least double the area of coverage over rival technology DCS-1900 in the PCS frequency range of 1.8-2.0 GHz for a typical cell site. This increased coverage allows operators deploying CDMA-based PCS systems to use less than one-half the number of cell sites than an operator using DCS-1900. Fewer cell sites translates into faster time-to-market and significantly decreased deployment and maintenance cost. DCS-1900 is a European-based TDMA technology that is a derivative of the GSM (Global System Mobile) system which has recently been deployed in several European cities. CDMA is the U.S. Cellular Digital Standard, embodied in IS-95 through IS-99, that has been adopted by many U.S. and international carriers for their evolution from analog to digital systems. AT&T manufactures both CDMA and DCS/GSM equipment. Qualcomm manufactures only wireless communications products based on CDMA. "PCS operators realize that they must meet the baseline coverage already established by existing cellular carriers to be competitive in their markets," explained Allen Salmasi, president, Wireless Telecommunications Division, Qualcomm. "CDMA's coverage advantage, which in a real operational environment may be up to four to five times the DCS area per cell, will allow new market operators to offer 'equivalent to cellular coverage' much quicker, more economically and with substantially better voice quality." "CDMA has proven to be inherently better than analog or TDMA systems for PCS applications in terms of both capacity and coverage," said Jim Brewington, president of AT&T Network Wireless Systems. "While the capacity advantage has always been acknowledged, it is CDMA's increased coverage area that will be the critical factor for PCS applications." The extensive link budget analysis for both CDMA and DCS-1900 was based on data from operational systems in the field. According to the study, the CDMA link budget advantage is a minimum of 8 dB, and may be up to 12 to 14 dB in an operational environment. This corresponds to approximately 3 to 5 times the area for each cell site. AT&T Network Systems is one of the world's largest manufacturers of network telecommunications equipment. It offers communications service providers virtually everything they need to build and operate their networks. With headquarters in San Diego, Qualcomm develops, manufactures, markets, licenses and operates advanced communications systems and products based on its proprietary digital wireless technologies. The company's primary product and development areas are the OmniTRACS system (a geostationary satellite-based, mobile communications system providing two-way data and position reporting services), CDMA wireless communications systems and products, and, in conjunction with others, the GlobalStar low-earth-orbit (LEO) satellite communications system. Other company products include the Eudora by Qualcomm electronic mail software, VLSI components and communications equipment. OmniTRACS is a registered trademark of Qualcomm Inc. GlobalStar is a trademark of Globalstar L.P. Eudora is a trademark of the University of Illinois licensed to Qualcomm Inc. Julie Cunningham - Qualcomm Inc. 619-658-4224 619-658-1434 (fax) Rich Larris - AT&T 201-606-2473 201-606-3189 (fax) Note: The work reported here was done by the AT&T Network Systems group, which is now part of Lucent Technologies, a telecommunications system and technology company that was spun off from AT&T in September 1996. For information about Lucent's products, including the 5ESS switch. Call 1-888-4-LUCENT (1-888-458-2367) Visit Lucent's website. For information about AT&T's wireless offerings, customers should visit AT&T Wireless Services AT&T Digital PCS AT&T PocketNet Service Wireless Data Services Aviation Services