Tuesday, May 22, 2012

Unit of Traffic - Erlang

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Few question can be asked -> what is the unit of traffic intensity -> What is Erlang -> Definition of erlang -> How erlang is m...
Friday, January 28, 2011

Is access fail in performance report from BSC is right?

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Access fail is a key parameter of CDMA technology. Access fail cannot be measured by performance reports extracted from BSC (Base Station Co...
1 comment:
Wednesday, January 19, 2011

Communication model of CDMA

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Information Stream -----------------> Speech coding --> Channel coding --> Scrambling --> Spread Spectrum --> Modulation --...
Monday, January 17, 2011

What is Ec/Io, How it is varied with traffic, Why Ec/Io is always negative

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This is a key parameter of CDMA technology measure at mobile station. It shows signal strength of each sector individually. Now question is ...
7 comments:
Thursday, January 13, 2011

Power control methods in CDMA

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Power control are two types: Forward link power control and reverse link power control Forward link power control:  Forward link power contr...

Why power control required in CDMA system

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CDMA is an interference limited system based on the number of user. Here each user is a noise source on shared cannel. Due to this CDMA syst...
1 comment:
Wednesday, January 12, 2011

CDMA Frequency Band and calculation

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CDMA technology is available is 450 Mhz, 800 Mhz and 1900 Mhz band. Out of these we are using 800 Mhz in current system. The band is having ...
1 comment: