diff options
Diffstat (limited to '116/CH6/EX6.4/exa6_4.sce')
-rwxr-xr-x | 116/CH6/EX6.4/exa6_4.sce | 64 |
1 files changed, 30 insertions, 34 deletions
diff --git a/116/CH6/EX6.4/exa6_4.sce b/116/CH6/EX6.4/exa6_4.sce index 314e151dd..31bf871f9 100755 --- a/116/CH6/EX6.4/exa6_4.sce +++ b/116/CH6/EX6.4/exa6_4.sce @@ -1,35 +1,31 @@ -
-//Caption: Program to determine system gain of 10Mbps, 2Ghz digital microwave repeater using 4 PSK modulation
-
-//Example 6.4
-
-//Page 325
-
-//Refer to figure 6.17 on page 300
-
-disp('From figure, Eb/N0 for 4 psk modulation can be determined 10.7 dB.')
-
-//Using equation 3.24 from Appendix C
-
-disp('SNR detector is 3dB higher than Eb/N0, therefore')
-
-snr=13.7//SNR=13.7dB
-
-disp('Since 4 PSK modulation provides 2bps/Hz, the sampling rate is 5 MHz, which is Nqyuist rate, therefore')
-
-a1=10*log10(125000000000000)
-
-a2=10*log10(1.3)
-
-A0=a1-13.7-7-3-a2
-
-disp('At a carrier frequency of 2GHz, the wavelength is')
-
-(3*10^8)/(2*10^9)
-
-FM=116+60+20*log10(0.15)-5-20*log10(4*%pi*5*10^4)//Fade Margin can be found by Equation 6.31
-
-//Result
-//A0 = 116dB
-//wavelength = 0.15 m
+ + +//Example 6.4 + +//Page 325 + +//Refer to figure 6.17 on page 300 + + +disp('SNR detector is 3dB higher than Eb/N0, therefore') + +snr=13.7//SNR=13.7dB + +disp('Since 4 PSK modulation provides 2bps/Hz, the sampling rate is 5 MHz, which is Nqyuist rate, therefore') + +a1=10*log10(125000000000000) + +a2=10*log10(1.3) + +A0=a1-13.7-7-3-a2 + +disp('At a carrier frequency of 2GHz, the wavelength is') + +(3*10^8)/(2*10^9) + +FM=116+60+20*log10(0.15)-5-20*log10(4*%pi*5*10^4)//Fade Margin can be found by Equation 6.31 + +//Result +//A0 = 116dB +//wavelength = 0.15 m //Fade Margin = 38.5 dB
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