Matlab rogram for TDM

Time Division Multiplexing (TDM)

A multiplexing technique which processes information of different transmitters successively in defined time segments for transmission over one channel.

It can be of two types:

1.Asynchronous Time Division Multiplexing

2.Synchronous Time Division Multiplexing

A simple MATLAB program for TDM 

clc;

 

clearll;

 

closeall;

 

x=0:.5:4*pi;

 

sig1=8*sin(x);

 

l=length(sig1);

 

sig2=8*triang(l);

 

subplot(221)

 

plot(sig1);

 

title('Sinosoidal Signal');

 

ylabel('Amp---------->');

 

xlabel('time----------->');

 

subplot(222);

 

plot(sig2)

 

title('trangular Signal');

 

ylabel('Amp---------->');

 

xlabel('time----------->');

 

subplot(223)

 

stem(sig1);

 

title('Sinosoidal Signal');

 

ylabel('Amp---------->');

 

xlabel('time----------->');

 

subplot(224);

 

stem(sig2)

 

title('trangular Signal');

 

ylabel('Amp---------->');

 

xlabel('time----------->');

 

l1=length(sig1);

 

l2=length(sig2);

 

for i=1:l2

 

sig(1,i)=sig1(i);

 

sig(2,i)=sig2(i);

 

end

 

tdmsig=reshape(sig,1,2*l1);

 

figure

 

stem(tdmsig);

 

title('Tdm Signal')

 

ylabel('Amp---------->');

 

xlabel('time----------->');

 

demux=reshape(tdmsig,2,l2);

 

for i=1:l1

 

sig3(i)=demux(1,i);

 

sig4(i)=demux(2,i);

 

end

 

figure

 

subplot(2,1,1)

 

plot(sig3)

 

title('Recovered Sinosoidal Signal');

 

ylabel('Amp---------->');

 

xlabel('time----------->');

 

subplot(2,1,2);

 

plot(sig4);

 

title('Recovered Triangular Signal');

 

ylabel('Amp---------->');