ROC curve for Likelihood ratio

Question

Bashar Ali 2013-2-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/61736-roc-curve-for-likelihood-ratio

评论： gari mah 2018-12-8

Hi

I want to plot the ROC curve at a specific SNR for the likelihood fusion rule which is a function of rayleigh fading channel gain and the probability of detection and probability of false alarm .

How I can do that ?:

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the cyclist 2013-2-2

With the plot() command.

If you want a more detailed than that, maybe you could post significantly more detailed question, perhaps along with code for the parts you have already managed to do?

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Answer 1

Shashank Prasanna 2013-2-2

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/61736-roc-curve-for-likelihood-ratio#answer_73590

See if this helps:

http://www.mathworks.com/matlabcentral/fileexchange/39127-parametric-roc-curve

If not provide some code of what you have tried, equations etc.

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gari mah 2018-12-8

Hi,

I am trying to implement Cooperative sensing for cognitive radio system, wherein I am taking double thresholds (high and low) for better detection. I want to know how can I incorporate a Fusion decion centre? I mean how to send one bit and 2 bit decisions and get final results based on their OR or AND operation.

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