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Power Control Vs Rate Control in CDMA
EVDO is just not bothered about controlling and varying power ouput in the forward link. The output power is constant unlike in IS-95/1x.
IS-95/1x base stations vary the power and give more power to disadvantaged users who are in poor RF conditions.
If a user is in poor RF conditions, instead of varying the power output,EVDO base stations vary the data rate offered to the user. They reduce the data rate keeping the power constant.
This is what I did on 30th,31st and 1st Nights
Gathering Storm
Michael Collins
World Trade Centre
During my primary school days there were verfy few TV channels. Infact two.
National and Regional Language Channel.
There was one boom and People swtiched from Doordarshan to cable TVs.
People watched more channels 24Hours.
Early TVs received TV signals using Antenna on their terraces.
Reception used to be poor to receive regional langugage channels.
We used to increase the antenna height to improve the quality.
Inherently, these Yagi Antennas have limited capabilities. They cannot see much wider frequencies. This is the reason why we could not have access to those 24 hr variety channels.
What was the alternative ?
Let’s move from housing a less powerful antenna at home to let some one in the community own a much better,wider and powerful antenna.
An antenna put on hill top with much better visibility to the satelite.
Since some one else owns a much better antenna, let’s take away all those home-antennas.
We will let a cable from the community antenna run into our homes.
Arrival of the cable TV.
In most texts, they use CATV for Cable TVs. CATV actually stands for Community Antenna TV.