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To: Eric L who wrote (4615)11/21/2000 5:06:57 PM
From: mightylakers  Read Replies (2) | Respond to of 5195
 
UMTS UTRA (WCDMA) is "claimed" to be 2 times as efficient spectrally as an IS-95A network (same as 1xMC is)

Same as 1xMc? How can that be true if you double your capacity and data speed with the same bandwidth and end up with same spectral efficiency?

As for claim

You claim, he claims, and I claim:-)

cdg.org

Table 1. Spectrum efficiency for voice in a vehicular environment: cdma2000 & WCDMA 

     System 
                 Chip Rate
                  (Mcps) 
                            Spectrum Efficiency for Forward Link/Reverse Link
                            * 
                            (Erlangs/MHz/ Omni cell)
                               Self evaluation 
                                                 Chinese evaluation 
  cdma2000
                  3.6864 
                                   36.7/29 
                                                      26.4/27.2 
  UTRA
  WCDMA
                   4.096 
                                  17.8/22.4 
                                                      18.4/22



To: Eric L who wrote (4615)11/22/2000 12:10:00 AM
From: Bux  Read Replies (1) | Respond to of 5195
 
Right. And Nokia's claim combined with simple math will tell you that the absolute cost to run a W-CDMA network will be higher than for a GSM network.

No big surprise and not very significant but that's all I was saying.

Bux


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