Now showing items 1-5 of 5

    • Efficient structure-based carrier offset estimator for OFDM system 

      Hiren, G.; Qasaymeh, Mahmoud Mohammad; Nizar, T.; Pendse, Ravi; Sawan, M. Edwin (IEEE, 2009-04-26)
      In this paper, we proposed a closed form solution for blind orthogonal frequency division multiplexing (OFDM) carrier frequency offset (CFO) estimation employing the rank- revealing QR triangular factorization method (RRQR). ...
    • High resolution joint time delay and frequency estimation 

      Heba, S.; Hiren, G.; Qasaymeh, Mahmoud Mohammad; Nizar, T.; Sawan, M. Edwin; Pendse, Ravi (IEEE, 2009-03-30)
      Joint Time Delay and Frequency Estimation (JTDFE) problem of complex sinusoidal signals received at two separated sensors is an attractive problem that has been studied for many engineering applications. In this paper, the ...
    • Rank revealing QR factorization for jointly time delay and frequency estimation 

      Qasaymeh, Mahmoud Mohammad; Hiren, G.; Nizar, T.; Pendse, Ravi; Sawan, M. Edwin (IEEE, 2009-04-26)
      The rank-revealing QR factorization (RRQR) is a valuable tool in numerical linear algebra because it provides accurate information about rank and numerical null-space. In this paper, we addressed the problem of estimating ...
    • RRQR based closed-form blind carrier offset estimator for OFDM systems 

      Qasaymeh, Mahmoud Mohammad; Nizar, T.; Hiren, G.; Sawan, M. Edwin; Pendse, Ravi (IEEE, 2009-05-25)
      Carrier Frequency Offset (CFO) is one of the major drawbacks of the Multi Carrier Modulation (MCM) technique. Blind, semiblind and data-aided techniques have been introduced to estimate the CFO. In this paper, a new blind ...
    • Semiblind multiuser MIMO channel estimators using PM and RRQR methods 

      Pendse, Ravi; Hiren, G.; Sawan, M. Edwin; Qasaymeh, Mahmoud Mohammad; Nizar, T. (IEEE, 2009-05-11)
      Estimating the channel state information (CSI) of several transmitters that use orthogonal space-time block codes (OSTBC) to communicate with a single receiver is considered. Based on rank revealing QR (RRQR) factorization ...