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Technology Stocks : QUALCOMM-The Wireless Wonder in 1999 -- Ignore unavailable to you. Want to Upgrade?

To: GO*QCOM who wrote (269)	5/24/2000 1:52:00 AM
From: GO*QCOM	Read Replies (1) \| Respond to of 343

TDMA vs CDMA Part 1: The Move to CDMA: Bell Mobility's Technology Decision by Brian O'Shaughnessy, Vice President, Technology Development, Bell Mobility After an initial deployment of TDMA digital technology, Canada's Bell Mobility discovered that its customers' needs were not being met. Following a detailed technical evaluation and exploration of the options, Bell Mobility replaced the TDMA system with CDMA digital technology to capitalize on CDMA's technical and financial advantages today and into the future. Initial Digital Decision Over the last ten years, Bell Mobility expended a significant amount of effort evaluating the alternatives at its disposal to evolve from the highly successful first generation AMPS analog system to a second generation digital technology. This effort was influenced by two factors: q In 1989 it became very evident that the existing AMPS network was running out of capacity, and given the rapid growth expected in customers and traffic, Bell Mobility needed an alternative. q Technology had evolved significantly since the first AMPS systems were introduced in the 1970's, which meant new service functionality could be introduced with new digital systems. Carriers around the world therefore started looking at various alternatives to analog in the late 1980's, including NAMPS, TDMA and FDMA systems. The consensus of the industry in 1989 was that TDMA was the only viable alternative and development began on that technology. CDMA technology was still in the research and development phase at the time and therefore not a commercially available option. In 1992, after numerous technology trials, Bell Mobility decided to deploy TDMA in its network. The TDMA service was officially launched in November 1993. The technology introduced at that time offered capacity enhancements (three calls in the same spectrum required to support one AMPS call) and two new features: Calling Number Display and Message Waiting Indicator. The other promised service enhancements were to be developed in the future. Soon after the launch, Bell Mobility discovered that while it was possible to get threefold capacity improvement, it was done at the expense of call quality. Customers were initially happy to move to the new TDMA digital network in order to get a lower priced rate plan that Bell Mobility was offering to attract customers to the digital service, but once customers started using the service, they were very dissatisfied with the voice quality. This result was a serious concern to Bell Mobility, causing its engineers to redouble their efforts in determining how to improve the quality. After significant analysis and network optimization effort, Bell Mobility came to the conclusion in 1995 that the only way to improve the TDMA service was to go back to the drawing board and redesign the core TDMA technology. --------------------------------------------------------------------------------