Adaptive fading channel estimator For MMSE receiver based CDMA systems

  • Authors:

  • Ali F. Almutairi;Faisal T. Alturki;Hamed M. Alazemi

  • Affiliations:

  • Electrical Engineering Department, Kuwait University;Electronic Engineering Department, College of Technological Studies, Kuwait;Computer Engineering Department, Kuwait University

  • Venue:
  • EHAC'05 Proceedings of the 4th WSEAS International Conference on Electronics, Hardware, Wireless and Optical Communications
  • Year:
  • 2005

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Abstract

In this paper, An LMS adaptive channel estimator algorithm is proposed to improve the practical implementation of MMSE receiver based CDMA systems. The desired user's fading process is estimated to provide the receiver with a reference phase and amplitude to demodulate the desired user signal. Results show that the proposed adaptive coefficients estimator outperforms the fixed coefficients estimator. Furthermore, the estimator is found to be unbias and the estimation error can be modeled as a complex Gaussian random process.