Cognitive Radio Matlab Code for finding Cluster head

[suman_saurav]

I want to assign random channels to random CR nodes(Secondary Users). If two nodes have common channel then only they are connected otherwise not. After that i want to calculate a value for each nodes based on common channel among its neighbors . Based on this values for each nodes I am applying SOC algorithm to find cluster head and hence total clusters.
I have divided my work in 4-5 steps:
My Rough Algorithm :
Step 1 : Assign random channels to each nodes.
Step 2 : Connect two nodes if they have at least common channel.
Step 3 : Apply SOC algorithm and find cluster head (keep note of common channel,no. of nodes,total clusters ,etc.)
Step 4 : Get clusters
Step 5 : Simulate according to the results obtained.

I want to use Matlab (I am a beginner Although).So far I have used this .

clear;
noOfNodes = rand(5);%randomly assign nodes . I have no idea how to assign random channel to each nodes.
rand('state', 0);
figure(1);
clf;
hold on;
L = 1000;
R = 200; % maximum range for each nodes;
netXloc = rand(1,noOfNodes)*L;
netYloc = rand(1,noOfNodes)*L;
for i = 1:noOfNodes
plot(netXloc(i), netYloc(i), '.');
text(netXloc(i), netYloc(i), num2str(i));
for j = 1:noOfNodes
distance = sqrt((netXloc(i) - netXloc(j))^2 + (netYloc(i) - netYloc(j))^2);
if distance <= R && () % and two nodes have common channel
matrix(i, j) = 1; % there is a link;
line([netXloc(i) netXloc(j)], [netYloc(i) netYloc(j)], 'LineStyle', ':');
else
matrix(i, j) = inf;
end;
end;
end;

Thank You.
Sorry for my english