Now showing items 1-6 of 6

    • A New Method for Doppler Centroid Estimation Based on Block Processing 

      Kartal, Mesut; Tunçay, Pelin (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2013)
      Doppler centroid frequency is an important parameter for Synthetic Aperture Radar signal processing, which is used to design a proper matched filter in azimuth domain. Doppler centroid is estimated from the received data. ...
    • Channel Estimation for SM Systems over Time-Varying Rayleigh Fading Channels 

      Acar, Yusuf; Doğan, Hakan; Panayırcı, Erdal (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2014)
      This paper is concerned with the challenging and timely problem of channel estimation for spatial modulated systems in the presence of time varying channels. Recently, estimation of channel state information for SM systems ...
    • Generalized Prefix Approach for Alamouti Coded OFDM Systems over Gaussian Channels Correlated in Space 

      Acar, Yusuf; Yıldız, Hakan; Cooklev, Todor; Doğan, Hakan (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2014)
      In this ivorkt, generalized frelix (GP) lbr space time block coded orthogonal frequency division multiplexing (STBC-OFDM) systems is considered in the presence of correlated channel. The 2x2 STBC case, in practice, lead ...
    • High-Performance Mimo Ofdm Wireless Systems With Generalized Prefix 

      Acar, Yusuf; Yıldız, Hakan; Cooklev, Todor; Doğan, Hakan (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2013)
      Consumers require increasing data rates and therefore it is important to develop techniques that increase the spectrum efficiency. MIMO OFDM is a fundamental technology for high data rate wireless systems. Correlation among ...
    • Iterative Channel Estimation For Spatial Modulation Systems Over Fast Fading Channels 

      Acar, Yusuf; Doğan, Hakan; Panayırcı, Erdal (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2014)
      Spatial Modulation (SM) based on the use of antenna indices to transmit information in addition to the conventional signal constellations has been recently proposed to solve practical problems encountered in MIMO systems. ...
    • Performance Improvement for Correlated 4x4 MIMO-OFDM Systems by Generalized Prefix Approach 

      Acar, Yusuf; Cooklev, Todor; Doğan, Hakan; Yıldız, Hakan (IEEE, 345 E 47Th St, New York, Ny 10017 Usa, 2013)
      Antenna correlation limits the multiplexing gain achieved by practical MIMO-OFDM systems and degrades the performance significantly. Recently, investigations are focused to reduce the antenna correlation by the designing ...