1 files changed, 23 insertions, 0 deletions
diff --git a/3446/CH21/EX21.10/Ex21_10.sce b/3446/CH21/EX21.10/Ex21_10.sce
new file mode 100644
index 000000000..209f98892
--- /dev/null
+++ b/3446/CH21/EX21.10/Ex21_10.sce
@@ -0,0 +1,23 @@
+// Exa 21.10
+// Repeat Problems 21.8 and 21.9, if the IEEE 802.11 FH device is replaced by the IEEE 802.11 DS device (Gp=11).
+
+clc
+clear all;
+
+Gp=11;//processing gain(given)
+//Defining variables from Exa 21.8 & 21.9
+PBt=20; //  transmitted power by the BT in dBm
+PMs=40;  // transmitted power of the IEEE 802.11 device in dBm
+PAp=40;  // transmitted power by the AP in dBm
+d=10;  // distance between AP and IEEE 802.11 device in m
+Y=4;  //path loss exponent
+Pe=10^-5;//Error probability
+
+//solution
+//Pe=0.5*e^(-0.5*Eb/No)
+SIR=log(Pe/0.5)/(-0.5);
+r1max=d*(SIR*PBt/(PAp*Gp))^(1/Y);// range of interference between Bluetooth and 802.11 device 
+printf(' Maximum coverage range for IEEE 802.11 DS is  %.2f metres \n',r1max);
+r2max=d*(SIR*PMs/(PBt*Gp))^(1/Y);
+printf('  Maximum coverage range for IEEE 802.11 FH is %.2f metres \n',r2max);
+disp(" Thus, the interference ranges are smaller for the IEEE 802.11 DS device compared to the IEEE 802.11 FH device.")