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Technology Stocks : Qualcomm Moderated Thread - please read rules before posting -- Ignore unavailable to you. Want to Upgrade?

To: J Langholtz who wrote (42235)	9/13/2004 9:22:47 PM
From: rkral	Read Replies (3) \| Respond to of 197013

JL, re "Is there an evdo response to hpsda? " HSDPA is the 3GSM response to CDMA2000 1xEV-DO ... and I'm reasonably sure both are based on Qualcomm's HDR technology. Now HSDPA will have a higher peak (and average) data rate simply because it uses 5 MHz bandwidth compared to 1.25 MHz for DO. But that's from the user's perspective. From the carrier's perspective, spectral efficiencies are about the same. Normalized to 5 MHz BW, that's 4 x 3.09 Mbps = 12.36 Mbps for DO Rev A vs 14.4 Mbps for HSDPA. And those numbers don't tell us typical data rates for the median carrier-to-interference ratio ("C/I"). Ron

To: J Langholtz who wrote (42235)	9/13/2004 11:02:05 PM
From: Eric L	Respond to of 197013

Qualcomm likes proprietary thingies ... J, << Is there an evdo response to hpsda? >> 34GHPP2 CDMA2000 Release C/D (1xEV-DV), or Qualcomm's more proprietary IS-856 1xEV-DO Release A, which essentially was derived from the preceding in a 3GPP2 ad hoc based on what the full 3GPP2 membership focused on. Time will tell whether this Qualcomm strategy was brilliant or stupid. Right now its a draw but I suspect that at the end of the dayit will look very STUPID, but WTFDIK. - Eric -