Title :
A Polynomial H∞ Channel Estimator for DS-CDMA Systems under Multipath Fading Channels
Author :
Cao, Chengtao ; Xie, Lihua ; Zhang, Huanshui
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ.
Abstract :
In this paper, we present a polynomial H∞ channel estimator for DS-CDMA systems with time-varying multipath fading channels which suffer from the lack of accurate knowledge of model dynamics and statistics of system noises. The algorithm is based on the Krein space theory and requires one J-spectral factorization. Compared with standard H∞ filter, the proposed algorithm is of lower computational complexity. The simulation results show that the proposed H∞ estimator provides a robust estimation performance against all kinds of noises and the modelling errors
Keywords :
channel estimation; code division multiple access; communication complexity; fading channels; noise; polynomials; DS-CDMA systems; J-spectral factorization; Krein space theory; computational complexity; model dynamics; multipath fading channels; polynomial H∞ channel estimator; system noises statistics; Computational complexity; Computational modeling; Equalizers; Fading; Finite impulse response filter; Multiaccess communication; Noise robustness; Polynomials; Statistics; Uncertainty;
Conference_Titel :
Decision and Control, 2006 45th IEEE Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-0171-2
DOI :
10.1109/CDC.2006.377271
