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Technology Stocks : Nokia (NOK)
NOK 6.835-1.1%Nov 7 9:30 AM EST
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To: 49thMIMOMander who wrote (9957)3/20/2001 7:25:08 PM
From: carranza2  Read Replies (1) of 34857
 
I'm your mesenger boy today, Illmarinen It's all Greek to me:

Thanks carranza2, more math for llmarinen

Assume 3/9 or 4/12 which is 3 cells/9 sectors or 4 cells/12 sectors - popularly used reuse patterns.

5 MHz bandwidth gives you 5000/200=25 GSM carriers. Each carrier is 200 kHz.
Carriers per sector assuming 4/12 sectorization = 25/12=2.08
carriers per sector assuming 3/9 sectorization=25/9=2.77

This is because we cannot reuse carriers due to adjacent channel interference.

A few channels in the carrier would go away for control. The best we can get is 2 carriers per sector.

Each carrier has 8 time slots with each time slot carrying 10kbps. Assuming 4 time slots assigned to GPRS we get 40kbps per carrier; i.e 80 kbps for two carriers
i.e 80kbps/sector

correct me if i am wrong anywhere.
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