Nonlinear multiuser parameter estimation and tracking in CDMA systems

@article{Caffery2000NonlinearMP,
  title={Nonlinear multiuser parameter estimation and tracking in CDMA systems},
  author={James Caffery and Gordon L. St{\"u}ber},
  journal={IEEE Trans. Communications},
  year={2000},
  volume={48},
  pages={2053-2063}
}
This paper presents a joint channel coefficient and time-delay tracking technique for code-division multiple-access (CDMA) systems. Due to the highly nonlinear nature of time delay estimation, an iterative nonlinear filtering algorithm, called the "unscented filter" (UF), is employed. The UF can provide a better alternative to nonlinear filtering than the conventional extended Kalman filter (EKF) since it avoids errors associated with linearization. The Cramer-Rao lower bound is derived for the… CONTINUE READING

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