Page 12 - EC8352 -SS-NOTES-by Prof.Bokhari ECE/MAMCET
P. 12
SUBJECT: EC8352- Signals and Systems
AUTHOR: M.SHAKUNTHALA, A.P/ECE/RMDEC
Dr.M.N.VIMAL KUMAR, AP/ECE/RMDEC
= 1 = 0
= 0 ≠ 0
Unit Impulse signal
1.4.5 Sinusoidal signal
Cosinusoidal signal is defined as Sinusoidal signal is defined as
= ( ) = ( )
where = 2πf = 2π m and is frequency in radians/sample
N
m is smallest integer
f is frequency in cycles/sample, A is amplitude
Cosinusoidal signal Sinusoidal signal
Sinusoidal signal
Cosinusoidal signal
1.4.6 Exponential signal
Real Exponential signal is defined as = ≥ 0
Decreasing exponential signal Increasing exponential signal
( 0 )
Complex Exponential signal is defined as = = [ + ]
0
0
= =
0
0
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