Compressed Sensing Sensing Matrix

I want to apply compressed sensing for compressing different types of signals, my problem is in choosing the sensing matrix. Could you please help me generating sensing matrix with different compression ratios. For a given compression ratio value, how can I generate the correct sensing matrix using matlab?

Thanks

[Walter Roberson]

The topic is also referred to as Compressive Sensing. I do not know if one of the two terms is preferred.

http://www.mathworks.com/company/newsletters/articles/magic-reconstruction-compressed-sensing.html

http://www.mathworks.com/matlabcentral/fileexchange/33813-compressive-sensing-simple-example

http://www.mathworks.com/matlabcentral/fileexchange/55879-bayesian-compressive-sensing--sparse-coding--and-relevance-vector-machine