Canadians want their Kindle. The device, which Forrester predicts Amazon will sell 1.8 Million copies of during 2009, is becoming a force in the publishing industry — and may well be Amazon’s iPod. As an example of its early impact, fully 5% of the...
This is a watershed event for Cisco — since the quote here is from Roland Acra that tells us that this deal is largely voice-based. SBC is probably putting together an IP-Centrex service using Cisco gear. -Ian. —- http://news.com.com/2100-1033-978126.html...
GSM uses two main techniques, TDMA AND Frequency-Hopping. This, combined with a third feature that doesn’t transmit “quiet times” — points where there is no speech, combines to produce between a 15x-20x increase in utilization. TDMA combined...
Oops. Let me clarify: CDM = 20x, TDM = 3x. AT&T and Rogers/Cantel use TDMA. Sprint, Telus, and most others use CDMA. -Ian. At 11:04 AM 18/05/00 -0700, Ian Andrew Bell wrote: >Oh. Sorry. > >TDMA: Time Division Multiple Access 3x Frequency Re-use >CDMA: Code...
Oh. Sorry. TDMA: Time Division Multiple Access 3x Frequency Re-use CDMA: Code Division Multiple Access 20x Frequency Re-use Refers, basically, to how cellular carriers squeeze multiple phones onto one “circuit” (which is actually a frequency/modulation)....
Ian Andrew Bell has been bending bits into business since 1993. He created Tingle, RosterBot, RingCentral, and other things celebrated and ignominious.
He is also a Hockeyist, Motorcyclist, and Aviation Enthusiast. Follow him on twitter as @ianb or find him on LinkedIN.
