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To: Eric L who wrote (5617)	6/18/2000 7:37:00 AM
From: JohnG	Respond to of 34857

Missing Graphs--Jacobs keynote at CDMA World Congress. Does any one know how th access the slides Jacobs used with his speech. qualcomm.com JohnG Jacobs live speech included a slide presentation that is not included on this link. The presentation addressed a very important subject that Engineer has discussed here in detail (Engineer's comments have been precisely correct in this area as compared to Jacobs' presentation). Jacobs used a 10MHz spectrum and plotted Voice call capacity versus data capacity mor different digital technologies. From his verbal explanation, a few things are clear. 0) There are curves for 95A, 95B, 1X MC, 1X MC w/HDR, DS CDMA (same as W-CDMA), GPRS, and EDGE. 1) for 1X MC CDMA QCOM gets 7 1.25MHz carriers. One cell can support 225 users. 1X-MC doubles voice capacity compared to 95B. 2) For DS CDMA there can only be 2 carriers. 3) For 1X MC he has a curve with plain IX MC technology and one with HDR. 4) Any number of the 1X MC channels can be data and in the case of HDR, the operator can vary the mix of HDR channels to voice channels by location and by time of day. Example: a hot data market can have 1X MC w/HDR with an adjacent location having only plain 1X MC. If the customer travels from the HDR locaton to the non-HDR location, the 1X MC device automatically switches from the 2.4 Mbps data rate of HDR to the 144Kbps data rate of plain 1X MC without losing the connection. 5) The DS CDMA curve was, according to Jacobs, a computer simulation due to the fact that the standards for DS CDMA are still fluid. The graph shows that DS has a considerably lower curve (plotting vice capacity vs data capacity) than 1x MC w/ HDR. This is due to the fact that 1X MC is better suited to handeling both the continuous flow of bits required for voice and the bursts of bits used for internet and other data apps. 6) the GPRS and EDGE curves were down at the bottom of the graph--implying very inefficient spectrum use fo data and limited top end data capacity. 7)said that a single cell site could provide up to 7 Mbps continuous data flow. For internet, users require only intermittant bursts of data--so a site supplies many internet users. Other points made: a)Importance of hetting 1X MC phones in customer hands ASAP so they will be there when 1X MC cells go live. QCOM is emphasizing getting these chips out the door. They work fine on 95A & 95B. b)plans to add HDR support to the main ASIC--now HDR is a separate chip. c) adding short range microwave capacity to chip--i take this to be blue tooth support. Jacobs sees the phone becomming the main computer for a significant % of the population. He seed ubiqutous (SP?) dumb keyboards and dumb screens in many public places that will connect to your phone by these short range links. d)1X MC & 1X MX w/HDR support the "GSM MAP NETWORK". I take this to mean that IX MC is designed to support an overlay of MC CDMA over GSM. QCOM's future DS-CDMA chips will do the same. d)Sees portable laptops with built in 1X MC w/HDR wireless support al well as 1X MC w/ HDR wireless modem cards that fit older lap tops. e) mentioned ASICS having support for MIDI, MP3, GPS that can be used for creative applications.

To: Eric L who wrote (5617)	6/19/2000 11:37:00 AM
From: tero kuittinen	Read Replies (4) \| Respond to of 34857

Looks like the conversion from CDMA to TDMA in USA is picking up momentum... first Ameritech and now these AT&T deals. The San Diego switch is the most delicious, I guess. The analog subscriber base there is massive, so it shouldn't cause too much turbulence to make the change now. Goes to show how the real world often defeats tech guru pontifications about "inevitable" trends. Talking about inevitable... it seems that ETSI adoption of GSM-400 as a new standard is coinciding with the decision to build the first GSM-400/1800 network in the Moscow region. Apparently the next hot upgrade cycle in Eastern Europe and certain Asian markets might be NMT-450 to GSM400/1800 dualmode - maybe even GSM-400/900/1800 trimode. It would seem likely that vendors with the best recent GSM-900/1800 dualmode track record would have an edge in landing the early GSM-400 orders. Naturally, this also gives a new opening for Latin American and other GSM markets with large, sparsely populated areas that need a digital standard with a better range than GSM-900. Too bad about the IT companies who spent money on alternative upgrades for NMT-450. Tero