Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : Qualcomm Incorporated (QCOM) -- Ignore unavailable to you. Want to Upgrade?

To: Keith Feral who wrote (112012)	2/1/2002 3:25:56 PM
From: Kayaker	Read Replies (2) \| Respond to of 152472

It's a MCF. Hmmm. What the heck is MCF. Here's all I can find... MCF Maintenance Coordination Function MCF Manual Change Form MCF Master Classification File MCF Master Cost File MCF Medical Care Facility MCF Meta Content Framework (Netscape) MCF Military Computer Family MCF Moto Clube de Faro (Motorcycle Association) MCF Muskegon Correctional Facility (Michigan Department of Corrections) MCF Thousand Cubic Feet However, my guess would be 'Mighty Confusing Fu**up'.

To: Keith Feral who wrote (112012)	2/1/2002 4:52:21 PM
From: pcstel	Read Replies (1) \| Respond to of 152472

Keith: Don't you think it's kind of funny that CDMA can deliver 3G voice and data on a 1.25 MHZ carrier CDMA2000 1XEV (DV) and data only (DO) on a second 1.25 MHZ carrier. At the same time, UMTS networks require 5 MHz for the uplink and 5 MHz for the downlink for a total of 10 MHz Well, I think you are a bit confused! First of all CDMA can deliver 3G voice and data on one 1.25Mhz CHANNEL, not carrier! CDMA 2000 uses FDD! Which requires a pair of 1.25Mhz Carriers. One for the forward link, and one for the reverse link. CDMA Voice is Full Duplex. You can talk and listen at the same time. So you achieve full duplex operation via Frequency Division on paired spectrum. Unless you are using some half-duplex application like QChat. Deploying Voice and Data on the same carrier provides flexibility, but at the cost of capacity. Since Data is usually asymmetrical. It creates a bit of spectral inefficiencies between the Forward and Reverse Channels (Carriers). In addition with voice, you have to maintain some spectrial margin for soft handoff. Whereas with 1XEV-DO. You can operate in TDD mode.. Which only requires 1 (1.25Mhz) Carrier and unlike a "mission critical" application like voice. Data is simply a "best attempt" type of service. So you really don't need soft-handoff when operating in TDD Data Only mode. WCDMA can be operated in either FDD mode for combined voice/data services (paired spectrum), or TDD data only mode (unpaired spectrum). It amazes my the number of "experts" that don't seem to grasp the basic concept of TDD and FDD modes. Now, I would not sit here and try and negate the inefficiencies of WCDMA vs. CDMA2000. But, quite frankly. In terms of my post. It really does not matter. My point IS. Is that the European Govts. have chosen to regulate competition, and the overall health of their telecom markets by regulating both Spectrum availability, and capacity expansion ability of the Technology deployed to limit hypergrowth in the supply side of the supply/demand equation. Look at China.. It's the same concept. Except, instead of using Technolgy limitations, they use pricing regulation to insure the stability of the supply/demand equation. CDMA is priced the same as GSM! But, CDMA is X times more efficient in the use of Spectrum. So a CDMA should be able to undercut the GSM operator pricing do to it's availability of larger amounts of capacity. The FCC's spectrum management policies are supposed to safe guard an excess supply of capacity on the market. However, unlike Europe, the US does not manage the technological gains in spectrial efficiencies via administration of deployed technologies. Which has led to an imbalance in the supply/demand equation. Pretty soon with ZIF technology. Some one is going to be able to buy on of these one-off 5Mhz spectrum parcels that the FCC is going to auction off. Pay almost nothing for it, and start offering $5 all you want voice and data services by deploying a FDD carrier pair and a single TDD carrier in between the two. Is this healthy for the US telecom industry as a whole? PCSTEL