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To: engineer who wrote (29469)	5/8/1999 11:59:00 AM
From: Ramus	Read Replies (1) \| Respond to of 152472

engineer, Right! Also, several months ago I read an article(one of the trade magazines..sorry don't remember which) talking about the BS transmit spectrum and the problem of possible time correlation(collision) of channel synch words.... the need to keep them separate in W-CDMA. They also spoke of the possibility that this timing, if controlled, could be used to advantage.... to keep the transmit signal envelope dynamics down. My God I thought, why be asynchronous in the first place.... the problems this causes. Oh well, the cost of being different. As Dr J.(not Julius Erving) said they will find out when they start fielding these systems. BTW, I downloaded the Medved QuoteTracker and will try it out. It looks pretty impressive. At the moment I'm using DLJDirect "MarketSpeed". I use it to track about 60 stocks. It gives realtime dynamic updates and is quite adequate for what I'm doing. DLJDirect is not the best broker so I don't use them for trades. Regards Walt

To: engineer who wrote (29469)	5/9/1999 8:04:00 PM
From: Clarksterh	Read Replies (1) \| Respond to of 152472

Engineer - YOu should know that Walsh codes are only orthogonal if they are synchronous. the probolem is that the system assumptions break down when you got asynch Walsh codes. There are lots of different kinds of 'synchronous'. I do not believe W-CDMA is proposed to be asynch at the chipping or even bit level (they maintain synch at this level with the BS sending out bits to all users at the same time and thus orthogonality will be maintained). They only propose that the MT and BS do not need to maintain a link when there is no data being transmitted. CDMAOne, in contrast, maintains a low rate link at all times when 'connected' and thus does not need to relock with every new data burst. Note that this somewhat conjecture based on the W-CDMA spec (which, as Walt has said many times, is far from clear) and looking at GoldenBridge's documentation, but I think it is accurate. This scheme would allow them to save some fairly small amount of power and bandwidth for really bursty data like Web surfing, but at the expense of complexity and perhaps some loss of capacity for less bursty data like voice. FWIW. Clark