A Frequency Domain State-Space Approach to LS Estimation and Its Application in Turbo Equalization

@article{Guo2011AFD,
  title={A Frequency Domain State-Space Approach to LS Estimation and Its Application in Turbo Equalization},
  author={Qinghua Guo and Defeng Huang},
  journal={IEEE Transactions on Signal Processing},
  year={2011},
  volume={59},
  pages={3288-3300}
}
A frequency domain state-space approach to the least squares (LS) estimation for finite impulse response (FIR) system identification is proposed by exploiting the Toeplitz structure of the data matrix, leading to two low-complexity FFT (fast Fourier transform)-based unbiased recursive estimators. The proposed recursive estimators are applied to the smoothing estimation of time-varying frequency selective channels in turbo equalization systems, and channel estimation approaches with complexity O… CONTINUE READING
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