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Diffstat (limited to '3547/CH5/EX5.9')
| -rw-r--r-- | 3547/CH5/EX5.9/5_9.jpg | bin | 0 -> 81097 bytes | |||
| -rw-r--r-- | 3547/CH5/EX5.9/Ex5_9.sce | 31 |
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diff --git a/3547/CH5/EX5.9/5_9.jpg b/3547/CH5/EX5.9/5_9.jpg Binary files differnew file mode 100644 index 000000000..c1470c4a7 --- /dev/null +++ b/3547/CH5/EX5.9/5_9.jpg diff --git a/3547/CH5/EX5.9/Ex5_9.sce b/3547/CH5/EX5.9/Ex5_9.sce new file mode 100644 index 000000000..d61f84605 --- /dev/null +++ b/3547/CH5/EX5.9/Ex5_9.sce @@ -0,0 +1,31 @@ +// Example 5.9
+// To find the in-phase and quadrature components of the current of a polarization modulated (PM) QPSK signal
+// Page no. 241
+
+clc;
+clear;
+
+// Given data
+theta1=%pi/4;
+Sx=expm(%i*theta1); // Signal data in x-polarization
+theta2=(5*%pi)/4;
+Sy=expm(%i*theta2); // Signal data in y-polarization
+PLO=10; // Local oscillator power in mW from Example 5.8
+Pr=0.1585; // Power at receiver in mW from Example 5.8
+R=0.9; // Reflectivity
+
+// The complex photocurrent corresponding to x-polarization
+Ix= (R*sqrt(Pr*PLO))*Sx/2; // The complex photocurrent corresponding to x-polarization
+Iix=real(Ix); // In-phase component of phtocurrent corresponding to x-polarization
+Iqx=-imag(Ix); // Quadrature component of phtocurrent corresponding to x-polarization
+
+// The complex photocurrent corresponding to y-polarization
+Iy= (R*sqrt(Pr*PLO))*Sy/2; // The complex photocurrent corresponding to y-polarization
+Iiy=real(Iy); // In-phase component of phtocurrent corresponding to y-polarization
+Iqy=-imag(Iy); // Quadrature component of phtocurrent corresponding to y-polarization
+
+// Display result on command window
+printf('\n In-phase component of phtocurrent corresponding to x-polarization = %0.4f mA',Iix);
+printf('\n Quadrature component of phtocurrent corresponding to x-polarization = %0.4f mA',Iqx);
+printf('\n In-phase component of phtocurrent corresponding to y-polarization = %0.4f mA',Iiy);
+printf('\n Quadrature component of phtocurrent corresponding to y-polarization = %0.4f mA',Iqy);
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