initial commit / add all books

1 files changed, 31 insertions, 0 deletions

diff --git a/3446/CH10/EX10.2/Ex10_2.sce b/3446/CH10/EX10.2/Ex10_2.sce
new file mode 100644
index 000000000..cb0793189
--- /dev/null
+++ b/3446/CH10/EX10.2/Ex10_2.sce
@@ -0,0 +1,31 @@
+// Exa 10.2

+// To calculate the received signal power at the receiver antenna and the SNR of the received signal.

+

+clc;

+clear all;

+

+//As we have to use data from Eg 10.1, 

+D=10000;  // in metres

+TxEIRP=30;  //Effective Isotropic Radiated Power(EIRP)dBW

+lamda=0.2;  //in metres

+Pt=10;  //trasmitted power in dBW

+Gt=20; //transmitter gain in dBi

+Gr=3;  //receiver gain in dBi

+Lo=6;//total system lossses in dB

+Nf=5;  //noise figure in dB

+BW=1.25; //mHz

+k=1.38*10^-23;  //Boltzmann constant

+T=290;  //temperature in degree kelvin

+//additional data given in this eg

+hr=40; //height of receiver in metre

+ht=2; //trasmittter antenna height in metres

+

+//solution

+Lp=20*log10(hr*ht/D^2);

+Pr=Lp+Pt+Gt+Gr-Lo;// received power in dBW

+No=10*log10(k*T);  //Noise density in dBW

+NO=No+30;  //factor of '30' to convert from dBW to dBm

+Pn=Nf+10*log10(BW*10^6)+NO;// noise signal power in dBm

+SNR=(Pr+30)-Pn;

+printf('The received signal power is %d dBm\n ',round(Pr+30)); //factor of '30' to convert from dBW to dBm

+printf('SNR is %d dB\n',SNR);