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ITS 4370 exam 1
formulas
13
Other
Undergraduate 3
02/24/2014
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Term
Shannon Limit
 Definition
C≤BW×Log2(1+(Ps/Pn))
Term
Power and Watts
 Definition
RdB=10 Log10(10W/1W)
Term
Frequency Selective Fading
 Definition

Tm>Ts

CBW<SignalBW
Term

Flat Fading

 

 Definition

Tm<Ts

CBW>SignalBW
Term
Fast Fading
 Definition

To<Ts

 
Term

Slow Fading

 

 Definition
To>Ts
Term
To
 Definition

Coherence Time

To≈1/Doppler freq

Doppler Freq=velocity/λ

λ=c(speed of Light)/freq
Term
Tm
 Definition
Max excess delay
Term
Ts
 Definition
Symbol Duration
Term
CBW
 Definition

1/(50×RMS delay)

1/(50xRMS of ζ)
Term
SNR
 Definition

SNR=Ps/Pn

SNR in dB=10 log10(Ps/Pn)

SNR in dB=PsdBm -PndBm
Term

Area of a sphere

 

 Definition
4×π×r2
Term
Free Space model
 Definition
PLindB=32.4+20log(RinKm)+20 log(finMhz)
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