Now that we have reviewed the first generation systems and before we move to the concepts and principles that enable these systems, Lets learn more about spectrum.
According to Wikipedia, Spectrum is is a condition that is not limited to a specific set of values but can vary infinitely within a continuum. Complex isn't it? Its a Latin word that means image.. We are purely interested in Radio spectrum and its properties.
Radio Spectrum : Consists radio frequencies , i.e. frequencies less than 300GHz. It is important to note that the generation of radio waves is strictly regulated by the governments / regulatory bodies all over the world. We will discuss the need of this mandate when we talk about Interference.
To begin with ITU has divided the entire radio spectrum (Ranging from 3kHz to 300GHz) into 9 bands. The band numbers start from 4. The signals with frequencies less than 3kHz are used for submarine communication due to the obvious reasons.
Every band has a band plan.It is rather interesting to study the band plans. It provides huge amount of information about the band usage. It actually has some scenarios which I hadn't even thought of!
Spectrum Management is going to be a very important word for us due to the limited resources and ever increasing demands..Spectrum Planning, Digital dividends will have more and more importance in the coming years.
According to Wikipedia, Spectrum is is a condition that is not limited to a specific set of values but can vary infinitely within a continuum. Complex isn't it? Its a Latin word that means image.. We are purely interested in Radio spectrum and its properties.
Radio Spectrum : Consists radio frequencies , i.e. frequencies less than 300GHz. It is important to note that the generation of radio waves is strictly regulated by the governments / regulatory bodies all over the world. We will discuss the need of this mandate when we talk about Interference.
To begin with ITU has divided the entire radio spectrum (Ranging from 3kHz to 300GHz) into 9 bands. The band numbers start from 4. The signals with frequencies less than 3kHz are used for submarine communication due to the obvious reasons.
Every band has a band plan.It is rather interesting to study the band plans. It provides huge amount of information about the band usage. It actually has some scenarios which I hadn't even thought of!
Spectrum Management is going to be a very important word for us due to the limited resources and ever increasing demands..Spectrum Planning, Digital dividends will have more and more importance in the coming years.
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