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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting -- Ignore unavailable to you. Want to Upgrade?

To: mightylakers who wrote (282)	7/5/2000 7:52:06 PM
From: gdichaz	Read Replies (1) \| Respond to of 197563

mightlakers: If it is accurate that a move to CDMA2000 1X (including HDR) then permits further movement to either MC or DS (CDMA 3X or WCDMA) then there is an easy path for Korea. Go with CDMA 2000 1X in both the current and new spectrum and choose the 3x flavor later after experience with 1X (including HDR). And if the Qualcomm 3X does in fact permit a choice of MC or DS, that should be game, set and match. Seems like Qualcomm is in a very strong position in Korea no matter how the ball bounces. Freedom of choice is best for Qualcomm where ever and when ever possible. The technology and economics are Qualcomm's strength. The bureaucracies, politics, media and FUDsters and probably most difficult of all - simple inertia - are not. We shall see. Best. Chaz PS engineer and others have said the chip rate difference is bridgeable. And convergence may be in everyone's interest as time goes on - who knows. ...

To: mightylakers who wrote (282)	7/5/2000 8:05:26 PM
From: quartersawyer	Respond to of 197563

mightylakers--< the system aquiring and handoff will be more complex.> Gregg Powers a year ago figured: QC's cdma2000 variant of 3G has some important technical advantages over WCDMA, but I fully expect the latter will get deployed is various forms and fashions... complexity is the mother of greater royalties and a more persistent technology franchise so viva la complexity. Message 9938848

To: mightylakers who wrote (282)	7/5/2000 9:35:14 PM
From: gdichaz	Respond to of 197563

mightylakers: Addendum. Re Korea and Samsung's views: SEOUL, South Korea — Samsung expects to deliver third-generation (3G) cellular systems next year that support services with data rates up to 15 Mbits/second, exceeding the maximum 2-Mbit/s rate typical of 3G systems that follow the International Mobile Telecommunications (IMT) standard for services using the 5-MHz spectrum band. Samsung's work is based on the IMT-2000 standard being hammered out by the Third Generation Partnership Project 2 (3GPP2). The systems would be based on an extension to the 1X EV technology that the 3G project is now developing. That technology ensures data service up to 5.2 Mbits/s using a 1.25-MHz band, the same chunk of bandwidth used by today's CDMA-based cellular systems. The 3GPP2 group expects to offer a 3X version of the technology that delivers 5.2 Mbits/s over a 5-MHz swath of spectrum, Samsung said. The company claims that the use of synchronous technology will provide more than a sevenfold efficiency gain compared with the asynchronous method used in 3G systems that deliver data rates of 2 Mbits/s. The synchronous approach will also allow more-flexible systems that can support standards like those coming for both the 1X EV and cdma2000 technologies, Samsung said. This approach will make it easier for service providers to upgrade from one service to the next or to increase the number of subscribers without replacing underlying hardware. OEMs here have almost completed cellular systems based on the cdma2000 1X (IS-95C) specification, which can provide a basic platform for synchronous IMT-2000 services. These systems are expected to be commercially available in October. Major IT companies in South Korea, including SK Telecom and LG Telecom, are preparing to support cdma2000 1X (IS-95C) services, which are expected to go live here in the second half of this year. Korea's equipment manufacturers hope to beat competing systems from suppliers outside Korea by as much as three months. The 1X EV systems, meanwhile, are slated to be available in the second half of 2001, when that standard is expected to come to a final vote. For its part, LG Telecom started its development of wideband CDMA systems in 1999. However, the work is not expected to be finished until late 2002 at the earliest.

To: mightylakers who wrote (282)	7/5/2000 9:37:33 PM
From: Ruffian	Read Replies (1) \| Respond to of 197563

That is indeed one of the key differences - ensures (to or consternation) that the radio (rf)<br> cannot be reused between 1x and W-CDMA. The numerology and waveform generation<br> changes quite a bit since W-CDMA is not 1.2288 * 3 Mcps!<p> On a slightly separate note - In the labs and trials where Q and its partners have been<br> doing 1x data for the past few months, the radio has been reused completely between 1x<br> and IS-95A/B - just one element changed in the base station and the entire infrastructure<br> can be reused as is! <p> also add software changes at<br> the base station controller for cdma2000 - the hardware change is just the channel<br> element card with a CSM5000 in it a friend expalined it to me

To: mightylakers who wrote (282)	7/6/2000 1:22:03 AM
From: tradeyourstocks	Read Replies (1) \| Respond to of 197563

<The CDMA2000 does have a DS version. But the chip rate is 3.68. WCDMA is using 3.84. However I think the real difference is between synchronous and asynchronous. In CDMA2000, base stations are synchronized so that they are using the PN code with different offset. In WCDMA different base station using different PN code, therefore don't need time synchronization between different base stations. However because of this, the system aquiring and handoff will be more complex. And so far I don't know anyone have given a demo to show that it can really work well. > Can the two chip rates be supported by a single ASIC? Are the differences in acquisition and handoff for WCDMA intended to bypass certain "soft-handoff" patents of Qualcomm? MicroE