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To: bananawind who wrote (13991)	8/21/1998 12:17:00 PM
From: engineer	Read Replies (1) \| Respond to of 152472

As the digital silicon densities grow larger and the power density goes way down, it is possible to make low enough power DSP chips with enough processing power to do things like CDMAone, GSM, etc in DSP code. thier idea is not a new one, been kicked around for about 10 years now. It is just becoming time that this may be realizable and still be able to compete in talk time, standby time, chip size, chip cost, etc. Lots of factors. now I can see how this can be done with the digital portion of the phone...this is not hard...but the Rf radios are so totally different in requirements, it would mean getting alot closer to Steinbreckers design where you just modulate and demoulate directly from digital all the way to 2 times the RF frequncy. this would be the only way to make them really work. but there would be 1 million times more information to process at that speed. Example..consider that my phone is working at 1900 MHZ, then I have to sample at 3800 Mhz to trap the waveform. this means that I have 3.8 billion samples a second to work on. then I have to figure out how to desample or filter this down to baseband(digital) at the 9.8 million samples per second that CDMA takes. this takes ALOT of processing power. for the present radio, you take the 1900 Mhz carrier and down convert it with a sideband carrier to an intermediate frequency of 200 Mhz, then sample it at 9.8 Mhz. by knowing exactly what you were doing and taking into account alot of math and RF complexities, you were able to reduce the number of samples by more than a million times. this saves alot of processing power. This was done by a simple mixer and filter which takes only a couple of milliamps rather than some giant high power processor taking 100's of milliamps (or even a few amps...) This is not to say that technology can;t get there in the next few years. At 0.1 micron technoloy (year 2001), you begin to approach the ability to do this. (BTW - Saw the REAL Mike Doyle at a longboard contest last week...or was it JMD?)

To: bananawind who wrote (13991)	8/21/1998 9:35:00 PM
From: JMD	Read Replies (3) \| Respond to of 152472

Hi Jim, been buzzing around the SF Bay Area which translates into being primarily stuck in traffic. My little berg is starting to resemble Noo Yawk more and more. As a consequence, I listened to a couple of billion 'talk radio' hosts who evidently are paid to piss people off as a result of which they call in to vent their opinions in order to get even more pissed off by the abusive radio hosts. Strange phenomenon, but stranger things are indeed going on. I was the first on my block to proclaim Wag The Dog as a cult classic when it was in current release. All my buds told me I was nuts. Thus, the only joy I can derive these days, is bragging rights on W-T-D which is not a heck of a lot of consolation for all this red crap on my screen. The market does not like this stuff and I will point out that a society that 'loses its way' pays a very real price. Check out the Dow Jones during the Vietnam War days for reference. Slick Willie is obviously a sad, sad joke. But he is starting to cost the Surfer, and y'all, some real dough. Getting tougher for me to figure out the soft landing scenario for this clown. Obviously, he should resign. Therefore, obviously, he won't. I care more for my net worth than Bill's zipper but suddenly they appear to have a direct causal relationship. Will return soon with more typical flippant B.S. As of now, I ain't got much sense of humor. Bummer. SM