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Technology Stocks : Nokia (NOK) -- Ignore unavailable to you. Want to Upgrade?

To: 49thMIMOMander who wrote (13905)	7/17/2001 6:24:34 PM
From: S100	Read Replies (1) \| Respond to of 34857

<academic idiots with no real experience do 129 tap> Bingo, you got it, think counting in binary and WCDMA.

To: 49thMIMOMander who wrote (13905)	7/17/2001 7:33:59 PM
From: Quincy	Read Replies (2) \| Respond to of 34857

That is because that 48 tap filter was "future" and "optional", QCOM didn't use any FIR filtering, just blasted the sky full of garbage.. Uh, the filter is necessary if your chiprate causes excessive out-of-band radiation. The FCC does not allow excessive out-of-band radiation. It would be fair to say they would have had one if they needed it. I consider 4.096mcps to be a dead debate. But, since I have time to waste on you, lets get started. Each customer increases the noise floor for others in the same channel. For voice, you end up dancing with TDD just to keep customers from laughing at your standby time. Smaller channels allows you to have more of them. Fewer customers per channel increases QOS overall. Since the overall speed of your network backbone will prevent you from ever seeing the full 2mb/sec in laboratory conditions, I seriously doubt anyone in Finland would notice a lower chiprate and its smaller channel spacing requirement. Here is one example of your garbage blaster with Qualcomm chips inside: gullfoss2.fcc.gov Help me out here. I am not seeing radiation outside of its operating channel. Note also that if QCDMA for 3G would have been deployed in Finland it would have disturbed the neighbouring bands so much that one extra band would have been wasted. A 200kHz guardband next to a 1.25mHz channel or an 800kHz guardband next to a 5mHz channel? Since out-of-band emissions from a CDMA phone would appear to be gaussian noise to adjacent channel users (or look like increased background noise to adjacent licenses using analog modulation techniques in TV or radio broadcasting), Finland would do well to bring its regulatory practices into the 21st century. Btw, even your old 56k modem has at least 128 tap filters, only academic idiots with no real experience do 129 tap filters (with MatLab, without any tool to properly optimize them) I don't expect 100 hours of talk time out of my laptop. But, you are comparing a filter designed to operate in a POTS environment where the frequency response can almost extend to 15khz to a 4mcps chiprate? I don't think you want DSP's cranking out those kinds of MIPS running for 100 hours on a tiny LI Ion battery that is already getting sucked dry by the color LCD display. Unless, Nokia wants to be in a position of issuing oven mitts in colors that accent their pretty hi-temp plastics.

To: 49thMIMOMander who wrote (13905)	7/18/2001 11:18:09 AM
From: S100	Read Replies (1) \| Respond to of 34857

< kind of military system would have either spilled over into the 5Mhz band or didn't have enough receive filtering itself.> How about a little hint here? Where is it used? Some one of a kind test bed? Was it COTS(Commercial off-the shelf ) or something built under a Government Contract? If a Gov Contract, there would be lots of Mil Specs listed in the contract and RF tests far in excess of anything the FCC requires. When the equipment left the plant, it would be working to the contract spec, however, there could hardware failures in the field that could be undetected by the users, or ( quite likely) intentional mis-ajustments. I do not believe they much care about the FCC regulations. The Military goes by somewhat different rules. I have never seen a spread spectrum military system, but the big talking points on SS are that the transmissions are hard to spot using the equipment for monitoring enemy transmissions. The SS would show as a small bit of interference and by using frequency hopping it would be randomly spread around. There did not seem to be any concern about causing interference to other users, in fact during time of stress, there would stand off jammers pumping lots of RF into some selected area. By the way, years ago there was something called a Spark Gap Transmitter. I have never seen a spectrum plot but expect it was rather dirty. Perhaps you could complain about that as well as some old CDMA systems that are no longer in use or some military system that was not designed to be compatible with civilian life. I have heard some rather vague rumors of CDMA systems working in some places (Korea and US come to mind) but very few of WCDMA systems working. What does this mean? snip The traffic in big cities such as Shenzhen and Shanghai has reached about 40,000 users per square kilometre, according to Wang Xiaoyun, manager of the Technology Development Division under China Mobile. New frequencies and new technologies are needed to satisfy users' demands, she said. The frequencies are also not sufficient to meet the demand for business growth. The existing frequencies used by China Mobile at present can only provide a capacity of 50,000 users per square kilometre after advanced technologies were adopted, such as frequency hopping and multi-level frequency multiplexing, according to Wang. Snip Message 16057516 How is the Cloudberry crop this year?