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A robust channel estimator for DS-CDMA systems under multipath fading channels | IEEE Conference Publication | IEEE Xplore
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A robust channel estimator for DS-CDMA systems under multipath fading channels


Abstract:

The paper addresses the problem of channel estimation for DS-CDMA systems undergoing time-varying multipath fading channels. The multipath fading channels are modeled as ...Show More

Abstract:

The paper addresses the problem of channel estimation for DS-CDMA systems undergoing time-varying multipath fading channels. The multipath fading channels are modeled as AR models. Based on the minimum mean square error (MMSE) criterion, the linear optimal estimator is obtained by a spectral factorization and a Diophantine polynomial matrix equation. The uncertainty of the channel model is taken into consideration to improve the robustness of the estimator. Compared with the Kalman estimator, the proposed algorithm has O(K/sup 2/) computational complexity, where K is the number of users. The simulation results show that the proposed estimator provides good estimation performance and robustness for fast fading channels.
Date of Conference: 29 November 2004 - 03 December 2004
Date Added to IEEE Xplore: 17 January 2005
Print ISBN:0-7803-8794-5
Conference Location: Dallas, TX, USA

References

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