Semi-blind channel identification for individual data bursts in GSM wireless systems
Signal Processing - Special section on signal processing technologies for short burst wireless communications
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Numerical Methods
Deterministic quadratic semi-blind FIR multichannel estimation algorithms and performance
ICASSP '00 Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 05
Blind identification of multipath channels: a parametric subspaceapproach
IEEE Transactions on Signal Processing
A least-squares approach to blind channel identification
IEEE Transactions on Signal Processing
Subspace methods for the blind identification of multichannel FIRfilters
IEEE Transactions on Signal Processing
Multipath channel identification based on partial systeminformation
IEEE Transactions on Signal Processing
Estimation of multipath parameters in wireless communications
IEEE Transactions on Signal Processing
Efficient decision feedback equalization for sparse wireless channels
IEEE Transactions on Wireless Communications
A robust parametric technique for multipath channel estimation in the uplink of a DS-CDMA system
EURASIP Journal on Wireless Communications and Networking
A robust parametric technique for multipath channel estimation in the uplink of a DS-CDMA system
EURASIP Journal on Wireless Communications and Networking
Wireless Personal Communications: An International Journal
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In this paper a parametric method for estimating the unknown multipath channel impulse response (CIR) in a semi-blind manner is proposed. The main trait of this method is that instead of seeking the whole CIR sequence, only the unknown time delays and attenuation factors of the physical channel multipath components are estimated. The technique is based on a suitable application of the sub-channel response matching (SRM) criterion. The resulting cost function is separable with respect to the two sets of unknown parameters, i.e., time delays and attenuation factors, and thus a two step optimization procedure can be applied. Concerning the first step, which is the most difficult one, it is proven that the resulting non-linear cost function can be decoupled in terms of the respective time delay parameters. Thus, only a small number of simple linear searches needs to be executed in order to estimate the time delays of the multipath channel. The new method offers significant computational savings and a lower mean square estimation error as compared to existing semi-blind channel estimation methods. It performs well even for closely-spaced delays and is quite robust to channel overmodeling.