Çağatay Candan

E-mail

ccandan@metu.edu.tr

Department

Department of Electrical and Electronics Engineering

ORCID

0000-0001-9106-0540

Scopus Author ID

6701380220

Web of Science Researcher ID

D-1380-2010

An Approximate MSE Expression for Maximum Likelihood and Other Implicitly Defined Estimators of Non-Random Parameters Mehmetcik, Erdal; Orguner, Umut; Candan, Çağatay (2023-03-01) An approximate mean square error (MSE) expression for the performance analysis of implicitly defined estimators of non-random parameters is proposed. An implicitly defined estimator (IDE) declares the minimizer/maximizer o...
Covariance Matrix Estimation of Texture Correlated Compound-Gaussian Vectors for Adaptive Radar Detection Candan, Çağatay; Pascal, Frederic (2022-01-01) Covariance matrix estimation of compound-Gaussian vectors with texture-correlation (spatial correlation for the adaptive radar detectors) is examined. The texture parameters are treated as hidden random parameters whose st...
Maximum likelihood autoregressive model parameter estimation with noise corrupted independent snapshots Çayır, Ömer; Candan, Çağatay (2021-09-01) Maximum likelihood autoregressive (AR) model parameter estimation problem with independent snapshots observed under white Gaussian measurement noise is studied. In addition to the AR model parameters, the measurement noise...
Frequency estimation of a single real-valued sinusoid: An invariant function approach Candan, Çağatay; Çelebi, Utku (2021-08-01) An invariant function approach for the computationally efficient (non-iterative and gridless) maximum likelihood (ML) estimation of unknown parameters is applied on the real-valued sinusoid frequency estimation problem. Th...
Maximum-likelihood direction of arrival estimation under intermittent jamming Bilgi Akdemir, Şafak; Candan, Çağatay (2021-06-01) Multiple-snapshot maximum-likelihood (ML) direction of arrival (DOA) estimation problem is studied for the intermittent jamming scenario. The intermittent jamming modality is based on the assumption that only a subset of t...
Proper Definition and Handling of Dirac Delta Functions [Lecture Notes] Candan, Çağatay (2021-05-01) Dirac delta functions are introduced to students of signal processing in their sophomore year. Quite understandably, Dirac delta functions, which should be more aptly called generalized functions or distributions, cannot b...
Parameter Estimation for Bursty-Intermittent Observations Patlamali-Kesikli Gozlemler icin Parametre Kestirimi Candan, Çağatay (2020-10-05) © 2020 IEEE.Parameter estimation problem is examined in the setting where the noise power is allowed to change from sample to sample. Parameters of the noise source is assumed to be generated by a Markov chain whose state ...
A Computationally Efficient Fine Frequency Estimation Method for Harmonic Signals Harmonik Isaretlerin Hassas Frekans Kestirimi Icin Dusuk Islem Yuklu Bir Yontem Çelebi, Utku; Candan, Çağatay (2020-10-05) A computationally efficient method for the fundamental frequency estimation of a group of harmonically related complex sinusoids is given. To this aim, an efficient frequency estimation method for single tone complex sinus...
A Space-Time Coded Mills Cross MIMO Architecture to Improve DOA Estimation and Its Performance Evaluation by Field Experiments Ungan, Cahit Ugur; Candan, Çağatay; Çiloğlu, Tolga (2020-06-01) Conventional Mills Cross architecture suffers from poor direction-of-arrival angle estimation accuracy in the dimension that the transmitter is aligned. To improve the estimation accuracy, a space-time coded, multiple-inpu...
Transmit beamformer design with a PAPR constraint to trade-off between beampattern shape and power efficiency Çayır, Ömer; Candan, Çağatay (Elsevier BV, 2020-04-01) This study examines the effect of peak-to-average power ratio (PAPR) constraint on the transmit beamformer design problem with the goal of establishing a trade-off between the power efficiency (maximizing the average trans...

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