function cdmamodem

function cdmamodem(user1,user2,snr_in_dbs)

% >>>multiple access b/w 2 users using DS CDMA

% >>>format is : cdmamodem(user1,user2,snr_in_dbs)

% >>>user1 and user2 are vectors and they should be of equal length

% >>>e.g. user1=[1 0 1 0 1 0 1] , user2=[1 1 0 0 0 1 1],snr_in_dbs=-50

% >>>or snr_in_dbs=50 just any number wud do

% Waqas Mansoor

% NUST , Pakistan

length_user2=length(user2);

for i=1:length_user1

if user1(i)==0

user1(i)=-1;

end

end

for i=1:length_user2

if user2(i)==0

user2(i)=-1;

end

%%plotting base band signal for user1

basebandsig1=[];

for i=1:length_user1

for j=0.01:0.01:tb%0.01

if user1(i)==1

basebandsig1=[basebandsig1 1];

else

basebandsig1=[basebandsig1 -1];

end