Yazar "Çırpan, Hakan Ali" için MF - Bildiri Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering listeleme
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Blind channel estimation for space-time coding systems with Baum-Welch algorithm
Çırpan, Hakan Ali; Panayırcı, Erdal (IEEE, 2002)In recent years, space-time coding is proposed to provide significant capacity gains over the traditional communication systems in fading wireless channels. In this paper, we consider the problem of blind estimation of the ... -
Channel estimation for space-time block coded OFDM systems in the presence of multipath fading
Panayırcı, Erdal; Çırpan, Hakan Ali (IEEE, 2002)In this paper, a computationally efficient, non-data-aided maximum a posterlori(MAP) channel estimation algorithm is proposed for orthogonal frequency division multiplexing (OFDM) systems with transmitter diversity using ... -
Cluster based sensor scheduling in a target tracking application with particle filtering
Özfidan, Özgür; Bayazıt, Uluğ; Çırpan, Hakan Ali (IEEE, 2007)In multi-sensor applications management of sensors is necessary for the classification of data they produce and for the efficient use of sensors as well. One of the important aspects in sensor management is the sensor ... -
Frequency selective fading channel estimation in OFDM systems using KL expansion
Şenol, Habib; Çırpan, Hakan Ali; Panayırcı, Erdal (IEEE, 2005)This paper proposes a computationally efficient, linear minimum mean square error (MMSE) channel estimation algorithm based on KL series expansion for OFDM systems. Based on such expansion, no matrix inversion is required ... -
Jointly optimal chunk and power allocation in uplink SC-FDMA
Mert, Teoman; Kaya, Onur; Çırpan, Hakan Ali (IEEE, 2013)For a single carrier frequency division multiple access (SC-FDMA) system, we obtain the jointly optimal power and chunk allocation policies which maximize the sum rate. Our solution is applicable to both localized and ... -
MIMO sinyalleri için uzay-zaman blok kodu klasifikasyonu
Öner, Mustafa Mengüç; Turan, Merve; Çırpan, Hakan Ali (IEEE, 2014-04-26)Bilinmeyen haberleşme sinyallerinin gözü kapalı ve işbirliksiz tanınması için geliştirilen teknikler, hem askeri hem de sivil uygulamalarda kullanım bulmuştur. Çok Girdili Çok Çıktılı (MIMO) haberleşme sistemleri, sinyal ... -
Non-data aided EM-Based channel estimation for OFDM systems with time-varying fading channels
Panayırcı, Erdal; Çırpan, Hakan Ali (Kluwer Academic Publishers, 2002)In this paper, a computationally efficient algorithm is presented for maximum a posteriori (MAP) channel estimation for OFDM systems employing M-PSK modulation scheme with additive Gaussian noise, based on the Expectation ... -
Parçacık süzgeçleme ile hedef izleme uygulamasında topak çizelgeleme
Özfidan, Özgür; Bayazıt, Uluğ; Çırpan, Hakan Ali (IEEE, 2007)Bu çalışmada, uzaklık ölçer algılayıcılarla hedef takibi uygulamasında algılayıcı çizelgeleme problemi ele alınmıştır. Çok algılayıcılı uygulamalarda algılayıcıların yönetimi ürettikleri verilerin sınıflandırılması için ... -
Pilot-aided bayesian MMSE channel estimation for OFDM systems: Algorithm and performance analysis
Şenol, Habib; Çırpan, Hakan Ali; Panayırcı, Erdal (IEEE, 2004)This paper proposes a computationally efficient, pilot-aided minimum mean square error (MMSE) channel estimation algorithm for OFDM systems. The proposed approach employs a convenient representation of the discrete multipath ... -
A sequential Monte Carlo method for blind phase noise estimation and data detection
Panayırcı, Erdal; Çırpan, Hakan Ali; Moeneclaey, Marc (IEEE, 2005)In this paper, a computationally efficient algorithm is presented for blind phase noise estimation and data detection jointly, based on a sequential Monte Carlo method. The basic idea is to treat the transmitted symbols ... -
Space time block code classification for MIMO signals exploiting cyclostationarity
Turan, Merve; Öner, Mustafa Mengüç; Çırpan, Hakan Ali (Institute of Electrical and Electronics Engineers Inc, 2015)Blind and noncooperative identification of the transmission parameters of unknown communication signals has been employed both in military and civilian applications. Multiple-Input-Multiple-Output (MIMO) transmission systems ...