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Diffstat (limited to '3739/CH6/EX6.18/EX6_18.sce')
| -rw-r--r-- | 3739/CH6/EX6.18/EX6_18.sce | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/3739/CH6/EX6.18/EX6_18.sce b/3739/CH6/EX6.18/EX6_18.sce new file mode 100644 index 000000000..e416028be --- /dev/null +++ b/3739/CH6/EX6.18/EX6_18.sce @@ -0,0 +1,26 @@ +//Chapter 6, Example 6.18, page 274
+clc
+
+//Initialisation
+f=420 //frequency in Hz
+h1=40 //height in m
+h2=5 //height in m
+d=15 //distance in km
+
+//Calculation
+A=69.55+26.16*log10(f)-13.82*log10(h1) //Hata parameters
+B=44.9-6.55*log10(h1)
+C=2*(log10(f*28**-1))**2+5.4
+D=4.78*(log10(420))**2-18.33*log10(f)+40.94
+E1=3.2*(log10(11.75*h2))**2-4.97
+E2=(((1.1*log10(f))-0.7)*h2)-((1.56*log10(f))-0.8)
+L3=A+B*log10(d)-D //in open area;
+L2=A+B*log10(d)-C //in suburban area;
+L1=A+B*log10(d)-E1 //in large cities;
+L11=A+B*log10(d)-E2 //in small cities;
+
+//Results
+printf("In large cities L1 = %.2f dB",L1)
+printf("\nIn small cities L1 = %.2f dB",L11)
+printf("\nIn suburban area L2 = %.2f dB",L2)
+printf("\nIn open area L2 = %.2f dB",L3)
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