Recent content by Geek007

Hi everyone, As we move from left to right in EM spectrum the energy EM wave carries in creases as does the Frequency. Then why even after having a lot of energy waves can't penetrate hard me trials like rock. For example, Microwave aren't that good in penetration of tough objects but have...

Hi there, We can't use Infrared rays outside for data communication of our home as sun light also contain infrared rays which possible will interfere with it.That's what i read in Data communication book. My Question is , Does sun rays also contain radio wave, microwave ? if yes, then why can't...

Hi there, Wifi uses either 2.5 GHZ band or 5 Ghz band and these bands lie in Microwave in EM spectrum. As i read in books, Microwaves are propagated using line of sight (LOS) technique, so sending and receiving antennas should need to be aligned accordingly. But WiFi signals are broadcasted...

Hi there, why the decomposition of periodic Composite signal give discrete frequencies and decomposition of aperiodic signal give continuous(in decimal) frequencies. please kindly do explain the concept behind in as simple words possible. Thanks

hi there, can someone please explain what is baseline wandering and how the continues 1's and 0's cause baseline wandering in digital transmission? Regards

can we use frequency and time period terms for digital signals or we have to use bit rate and bit interval terms for digital signal. in simple words,

hi there, Why does we need to have a signal which always has the average amplitude of zero. i read some where that it would be inefficient for over transmission medium to carry a signal which have amplitude great than zero. Why?

does the non periodic signal have period, as period and frequency are exactly of opposite of each other?

hy everyone, I'm new here on this forum. I'm a CS student and learning Data communication now a days. Data communication involves Signals so much which is the reason why i come here on this forum. Hope,i'll spent a very good time here.

Well, if non periodic signal don't have frequency then why we said this music is of 25khz etc? i mean to say , why should then we associate frequency with non peroidic signals such like music?

Can someone kindly explain , what is the frequency of non periodic signals? Periodic signals have frequency of number of cycles completed in one second and but non periodic signals don't have repeated pattern so what would be the frequency of non periodic signals. Kindly do explain it in simple...