Yazar "Çırpan, Hakan Ali" için MF - Makale Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering listeleme
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Adaptive Kalman receiver for OFDM systems with transmit diversity in mobile wireless channels
Şen, Adnan; Çırpan, Hakan Ali; Panayırcı, Erdal (Walter De Gruyter GMBH, 2004-12)A new joint channel tracking and symbol detection scheme is proposed in this paper for pilot symbol assisted transmit diversity OFDM systems by exploiting the correlation of the adjacent subchannels. Modelling the channel ... -
Cyclostationarity based blind block timing estimation for alamouti coded MIMO signals
Öner, Mustafa Mengüç; Gül, Serhat; Çırpan, Hakan Ali (IEEE, 2017-06)Blind parameter estimation algorithms provide a powerful tool for application scenarios where the use of training or pilot sequences is not desirable, e.g., in order to improve the bandwidth efficiency of the transmission, ... -
Eurasip journal on wireless commuication and networking: Editorial
Panayırcı, Erdal; Georghiades, Costas N.; Wang, Xinheng; Çırpan, Hakan Ali (Springer International Publishing, 2005-04-15)[No abstract available] -
Iterative channel estimation approach for space-time/frequency coded OFDM systems with transmitter diversity
Çırpan, Hakan Ali; Panayırcı, Erdal; Doğan, Hakan (Assoc Elettrotecnica Ed Elettronica Italiana, 2004-06)Focusing on transmit diversity orthogonal frequency division multiplexing (OFDM) transmission through frequency selective channels, this paper pursues novel iterative channel estimation approaches for both space-frequency ... -
Joint channel tracking and symbol detection for OFDM systems with Kalman filtering
Şen, Adnan; Çırpan, Hakan Ali; Panayırcı, Erdal (Urban & Fischer Verlag, 2003)This paper proposes a new joint channel tracking and symbol detection scheme for pilot symbol-assisted OFDM systems in multipath fading. The proposed scheme uses Kalman filters for both channel tracking and subsequent ... -
Joint modulation classification and antenna number detection for MIMO systems
Öner, Mustafa Mengüç; Turan, Merve; Çırpan, Hakan Ali (IEEE, 2016-01-07)Noncooperative classification of the modulation type of communication signals finds application in both civilian and military contexts. Existing modulation classification methods for multiple-input multiple-output (MIMO) ... -
Linear expansions for frequency selective channels in OFDM
Şenol, Habib; Çırpan, Hakan Ali; Panayırcı, Erdal (Elsevier GMBH, 2006)Modeling the frequency selective fading channels as random processes, we employ a linear expansion based on the Karhumen-Loeve (KL) series representation involving a complete set of orthogonal deterministic vectors with a ... -
A low-complexity KL expansion-based channel estimator for OFDM systems
Şenol, Habib; Çırpan, Hakan Ali; Panayırcı, Erdal (Springer International Publishing, 2005-04-05)This paper first proposes a computationally efficient, pilot-aided linear minimum mean square error (MMSE) batch channel estimation algorithm for OFDM systems in unknown wireless fading channels. The proposed approach ... -
Maximum a posteriori multipath fading channel estimation for OFDM systems
Panayırcı, Erdal; Çırpan, Hakan Ali (Assoc Elettrotecnica Ed Elettronica Italiana, 2002-10)In this paper, a non-data-aided maximum a posteriori (MAP) channel estimation technique for OFDM systems employing M-PSK modulation scheme is proposed. The technique requires a convenient representation of the discrete ... -
Maximum likelihood blind channel estimation for space-time coding systems
Çırpan, Hakan Ali; Panayırcı, Erdal; Çekli, Erdinç (Hindawi Publishing Corporation, 2002-05)Sophisticated signal processing techniques have to be developed for capacity enhancement of future wireless communication systems, In recent years, space-time coding is proposed to provide significant capacity gains over ...