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 : NEXTEL -- Ignore unavailable to you. Want to Upgrade?

To: wonk who wrote (6452)	5/30/1998 1:00:00 AM
From: Arnie Doolittle	Read Replies (1) \| Respond to of 10227

Wireless-wonk, your knowledge of digital wireless is extremely valuable and I thank you for helping me understand NXTL's capacity/quality issues vis-a-vis its competition. As you've probably guessed, I have a few more questions. "However, as I answered Paul, you don't get something for nothing. When I responded to Tony I said he should also discuss what the reduced bandwidth per voice channel means for relative voice quality." Are you saying that iDEN has the least desirable voice quality, T voice quality is slightly better and FON voice quality is the best of the 3? "Also, fewer bits generally translates into greater susceptibility to interference, again all other factors being equal." Ah, that's the question: Are all other factors equal or is iDEN superior/equal to T's TDMA and FON's CDMA in ways that it compensates for the reduced bandwidth per voice channel? "Spint PCS (FON) uses CDMA so the comparison doesn't apply. The numbers are basically correct." I'm confused. Does FON's CDMA get 8 calls per 1000 MHZ or not? I'm under the impression that CDMA has greater theoretical capacity than TDMA, although I've also heard that CDMA's weakness is data and that TDMA will eat CDMA's lunch when widespread use of wireless data transmission occurs. "The actual increase in site capacity is dependent on the ratio of DC channels to regular channels and the ration between inbound and outbound." Are you saying that iDEN requires NXTL to predetermine how many channels are allocated to DC and how many are for digital cellular? If it's any help, NXTL says that 2/3 of their traffic is Direct Connect (6:1). Again,thanks for your help in understanding how all these different digital technologies compare. Arnie