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| author | priyanka | 2015-06-24 15:03:17 +0530 |
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| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /1583/CH3/EX3.8/NNID_Ex_3_8.sce | |
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initial commit / add all books
Diffstat (limited to '1583/CH3/EX3.8/NNID_Ex_3_8.sce')
| -rwxr-xr-x | 1583/CH3/EX3.8/NNID_Ex_3_8.sce | 18 |
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diff --git a/1583/CH3/EX3.8/NNID_Ex_3_8.sce b/1583/CH3/EX3.8/NNID_Ex_3_8.sce new file mode 100755 index 000000000..37b9ae957 --- /dev/null +++ b/1583/CH3/EX3.8/NNID_Ex_3_8.sce @@ -0,0 +1,18 @@ +clc
+//Chapter 3:Network noise and intermodulation distortion
+//example 3.8 page no 83
+//given
+NF=4//noise figure in dB
+B=3*10^3//bandwidth
+Rs=50//sourse resistance
+k=1.38*10^-23//Boltzmmans constant
+T=290//tempreture
+//For si of -125dBm the value of Ei is 0.245uV will produce a 10dB output to noise ratio. now consider the performance of this receiver when it is connected to an antenna with a noise figure of 20dB
+N_ant=20//antenna noise figure
+N_Fr=4//receiver noise figure
+F_ant=10^(N_ant/10)//antenna noise factor
+Fr=10^(N_Fr/10)//receiver noise factor
+S_N=10//output signal to noise ratio
+Si_W=(S_N)*(F_ant+Fr-1)*k*T*B//available input power in Watts
+Ei=sqrt(Si_W*4*Rs)//minimum detectable signal
+mprintf('the minimum detectable signal is %f uV',round(Ei*1e6*100)/100)
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