detection and estimation theory - msol.people.uic.edumsol.people.uic.edu/ece531/slides/lecture...

20
Detection and Estimation Theory Lectures 17 Mojtaba Soltanalian- UIC [email protected] http://msol.people.uic.edu Based on ECE 531 Slides- 2011 (Prof. Natasha Devroye) & http://ens.ewi.tudelft.nl/Education/courses/et4386/Slides/09.detection.pdf

Upload: truongkhue

Post on 04-Jun-2018

243 views

Category:

Documents


1 download

TRANSCRIPT

Detection and Estimation Theory

Lectures 17

Mojtaba Soltanalian- [email protected]

http://msol.people.uic.edu

Based on ECE 531 Slides- 2011 (Prof. Natasha Devroye) & http://ens.ewi.tudelft.nl/Education/courses/et4386/Slides/09.detection.pdf

Detection Theory

Detection Theory

Examples: Radar

Detection Theory

Examples: Digital Communication

Detection Theory

Examples: Speech Processing

Detection Theory

Examples: Tests in Medicine

Statistical Detection Theory

Neyman-Pearson Theorem

Statistical Detection Theory

Neyman-Pearson Theorem

Statistical Detection Theory

Neyman-Pearson Theorem

Neyman-Pearson Theorem

Statistical Detection Theory

Receiver Operating Characteristic (ROC)

Statistical Detection Theory

Receiver Operating Characteristic (ROC)

Detection Theory

- For -

Deterministic Signals

Known Signal in Gaussian Noise

>>> Matched Filter

>>> Matched Filter

a.k.a. Correlator, or Replica-Correlator

>>> Matched Filter

a.k.a. Correlator, or Replica-Correlator

The matched filter maximizes output SNR of the detector

(over all linear filters):

Performance of Matched Filter

Generalized Matched Filter

Generalized Matched Filter

-- Prewhitening

Performance of Generalized Matched Filters

Signal Design of Generalized Matched Filters

Hint: Q (.) is a decreasing function …