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Hi all
please I need to Know what's the problem in this model as in figure
the result of transmitter as this figure
receiver get a problem when received zeros as the figuer
please how i can remove this problem
Thanks in advance
Rawan Ayyoub
Hi all,
please i need to make simulation to the attached circuit using circuit maker 2000 student edition , this circuit work as automatically emergency lighting circuit when power outages.
Thanks in advance
Rawan Ayyoub
Dear Mityan , thanks for your replay. i have an explanation in this figure:
According to figure, If Rx moving to A location (which is far away from the source) or to B location (which is toward the source), then ∆L increase or decrease according to Rx velocity. In case Rx moving to C location...
Hi all,
Please I need an explanation a bout the Doppler effect; according to this equation :-
Δf = ( V/λ)cosΘ
where:-
Δf : is the Doppler frequency Shift
V : Vehicle speed
Θ : the separation angle between the direction of motion of the mobile and the direction of arrival of the wave
according...
Dear W_Heisenberg ;
Thanks a lot for your replay, this Question is homework in GSM course , so I have thought in this solution ,,,,,,, and now you have confirmed to me the information ...... I repeat my thanks :lol:
with my deepest thanks,
Rawan Ayyoub.
Hi all ;
I need to know the formula which it has relation between the number of cells and cell radius in GSM ............. according to this if the radius reduced by ( 1/2 ) then cell number increased by 4 ? ......... please i need any explanation ? ,,,,,,,,, i don't know if that is according...
Hi all,
Please I need to explanation about cluster size in cellular system using GSM , according to this equation [ The cluster size must satisfy: N = i2 + ij + j2 where i, j are non-negative integers ] , & The cluster size, N, is typically equal to 4, 7, or 12.
So, if N=1 that is mean all...
Thanks all for replay, for more clearly to me , Please
from your answer Data rate is the bit rate and these two formula according to it, this correct or no ??!!
With My deepest thanks,
Rawan Ayyoub
Hi all,
Please I need to ask what's the data rate of QPSK signal ??? its bit rate or the symbol rate , in my system I use 20k Hz as frequency of bit in each branch I and Q branches , then if I faced Question about the Data Rate of my system which the answer 20K Hz or 40K Hz , and this values...
Thanks all for replay , but I need which one of them is circuit have threshold and compare analog signal with this threshold value then its output digital data 1 or 0.
Thanks in advance,
Rawan ayyoub
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