updated the code

2 files changed, 45 insertions, 49 deletions

diff --git a/116/CH11/EX11.1/exa11_1.sce b/116/CH11/EX11.1/exa11_1.sce
index 56750b986..45a82df94 100755
--- a/116/CH11/EX11.1/exa11_1.sce
+++ b/116/CH11/EX11.1/exa11_1.sce
@@ -1,30 +1,28 @@
-  

-//Caption:Program to determine the distance limit imposed by the need to echo E bit in a BRI S/T interface

- 

-//Example 11.1

- 

-//Page 501

- 

-//Refer to figure 11.5 on page 500

- 

-disp('By seeing the figure, it can be seen that the minimum delay between a terminal transmitting D bit and receiving it back in the following E bit is seven bit times')

-

-disp('At a 192 kbps data rate the duration of bit is 5.2 usec. Thus, the total round trip propagation time is ')

-

-7*5.2//usec

-

-disp('Assuming no appreciable circuitry delays in the NT,')

-

-c=3*10^8// speed of light

-

-Lmax=(36.4*10^-6)*(1/3)*c

-

-disp('Because round trip propagation involves both direction of transmission')

- 

-Dmax=(1/2)*Lmax

-

-disp("Result")

- 

-disp("Maximum length of wire(Lmax) = 3640 m = 3.64 km")

- 

-disp("Maximum distance(Dmax)= 1820 m = 1.82 km")

+
+//Example 11.1
+ 
+//Page 501
+ 
+//Refer to figure 11.5 on page 500
+ 
+disp('By seeing the figure, it can be seen that the minimum delay between a terminal transmitting D bit and receiving it back in the following E bit is seven bit times')
+
+disp('At a 192 kbps data rate the duration of bit is 5.2 usec. Thus, the total round trip propagation time is ')
+
+7*5.2//usec
+
+disp('Assuming no appreciable circuitry delays in the NT,')
+
+c=3*10^8// speed of light
+
+Lmax=(36.4*10^-6)*(1/3)*c
+
+disp('Because round trip propagation involves both direction of transmission')
+ 
+Dmax=(1/2)*Lmax
+
+disp("Result")
+ 
+disp("Maximum length of wire(Lmax) = 3640 m = 3.64 km")
+ 
+disp("Maximum distance(Dmax)= 1820 m = 1.82 km")
diff --git a/116/CH11/EX11.2/exa11_2.sce b/116/CH11/EX11.2/exa11_2.sce
index 665583926..f8a703198 100755
--- a/116/CH11/EX11.2/exa11_2.sce
+++ b/116/CH11/EX11.2/exa11_2.sce
@@ -1,19 +1,17 @@
-  

-//Caption:Program to determine the theoretical maximum data rate of a prefectly equalized voiceband modem

- 

-//Example 11.2

- 

-//Page 513

- 

-disp('The signal-to-quantizing-noise ratio(SQR) is given in chap3 to be on the order of 36dB, which corresponds to power ratio of 3981.')

- 

-disp('Using this value in Shannon theorem for the theoretical capacity of a channel yield,') 

- 

-SNR=3981

-

-C=3100*[log2(1+SNR)]

-

-disp("Result")

- 

-disp("data rate = 37 kbps")

-

+   
+//Example 11.2
+ 
+//Page 513
+ 
+disp('The signal-to-quantizing-noise ratio(SQR) is given in chap3 to be on the order of 36dB, which corresponds to power ratio of 3981.')
+ 
+disp('Using this value in Shannon theorem for the theoretical capacity of a channel yield,') 
+ 
+SNR=3981
+
+C=3100*[log2(1+SNR)]
+
+disp("Result")
+ 
+disp("data rate = 37 kbps")
+