Browsing by Author "Ozdemir, Ozgur"

Now showing items 1-6 of 6

    • Analysis of In-band Full-Duplex OFDM Signals Affected by Phase Noise and I/Q Imbalance 

      Samara, Lutfi; Ozdemir, Ozgur; Mokhtar, Mohamed; Hamila, Ridha; Khattab, Tamer ( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)
      The idea of the simultaneous transmission and reception of data using the same frequency is a potential candidate to be deployed in the next generation wireless communications standard 5G. The In-Band Full-Duplex (IBFD) ...

    • An Autonomous Packet Transmission Strategy for Opportunistic Wireless Sensor Networks 

      Soy, Hakki; Ozdemir, Ozgur; Bayrak, Mehmet ( Hindawi Publishing Corporation , 2012 , Article)
      We consider a wireless sensor network that comprises a single hop between the sensor nodes and the central controller node with multiple antennas. In this system model, we concentrate on the single-beam opportunistic ...

    • Beamforming OFDM Performance under Joint Phase Noise and I/Q Imbalance 

      Hamila, Ridha; Ozdemir, Ozgur; Al-Dhahir, Naofal ( IEEE , 2015 , Article)
      Phase noise (PHN) and in-phase/quadrature (I/Q) imbalance are two major RF impairments in direct-conversion wireless transceivers. Beamforming and orthogonal frequency division multiplexing (OFDM) schemes have been adopted ...

    • Exact average OFDM subcarrier SINR analysis under joint transmit-receive I/Q imbalance 

      Ozdemir, Ozgur; Hamila, Ridha; Al-Dhahir, Naofal ( IEEE , 2014 , Article)
      The subcarrier signal-to-interference-plus-noise ratio (SINR) expression for orthogonal frequency-division multiplexing (OFDM) systems impaired by in-phase/quadrature (I/Q) imbalance is a ratio of correlated random variables. ...

    • Exact SINR analysis of OFDM systems under joint Tx/RX I/Q imbalance 

      Ozdemir, Ozgur; Hamila, Ridha; Al-Dhahir, Naofal ( IEEE , 2013 , Conference Paper)
      The direct-conversion architecture used for Orthogonal Frequency Division Multiplexing (OFDM) systems suffers from intercarrier interference (ICI) between image subcarriers in each OFDM symbol due to I/Q imbalance between ...

    • Joint Frame Synchronization and Channel Estimation: Sparse Recovery Approach and USRP Implementation 

      Ozdemir, Ozgur; Anjinappa, Chethan Kumar; Hamila, Ridha; Al-Dhahir, Naofal; Guvenc, Ismail ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)
      Correlation-based techniques used for frame synchronization can suffer significant performance degradation over multi-path frequency-selective channels. In this paper, we propose a joint frame synchronization and channel ...