Performance of the MMSE Receiver Front-ended by CMA Array in the Mult-path Faded CDMA Forward Link.

  • Published : 2007.12.30

Abstract

The structure of MMSE receiver frontended by CMA array working in CDMA forward link is proposed. By using the despreaded pilot signal of forward link as a reference signal, CMA array can capture multi-path signals securely even in severely faded mobile channel. The remaining MAl (Multiple Access Interference) is cancelled by the cascaded MMSE receiver. Through computer simulation, it is proved that the proposed system shows much better BER performance than any other systems. As a mobile based spatio-temporal receiver, the proposed system also reduces implemental cost and complexity by adopting the simplest algorithm for its spatial and temporal domain processing.

Keywords

References

  1. U. Madhow and M.L. Honig, 'Minimum mean squared error interference suppression for directsequence spread-spectrum code-division multipleaccess,' Proc. 1st Int. Conf. Universal Personal Comm., Dallas,TX, Sept. 28.-Oct.1,1992
  2. Urbashi Mitra, H. Vincent Poor, 'Adaptive Receiver Algorithms for Near-Far Resistant CDMA', IEEE Trans. on Comm. vol. 43, pp 1713-1995 no.2/3/4/, Feb/Mar./Apr. 1995 https://doi.org/10.1109/26.380222
  3. J.C. Liberti, T.S. Rappaport,'Analysis of CDMA cellular radio systems employing Adaptive antenna in multipath environments',VTC'96
  4. T.S. Rappaport'Smart Antenna' , 1999 IEEE Press
  5. U.Madhow,'Blind Adaptive Interference Suppression for the Near-Far Resistant Acquisition and Demodulation of DS/CDMA signal',IEEE Trans. On Signal Processing,voI45,1997
  6. S. Verdu, 'Minimum probability of error for asynchronous Gaussian multiple-access channel,' IEEE Trans. Inform. Theory, vol. IT-32, pp 85-96, Jan. 1986
  7. W. Lee, R.L. Pickholtz,'Convergence Analysis of a eM Array for CDMA System' Special Issue On Signal Separation and Interference Cancellation for PIMRC, March 1995