A general method for user dedicated downlink channel estimation in WCDMA receivers is addressed, particularly suited in the presence of dedicated channel transmit beamforming. A three-step dedicated channel estimation procedure is derived which exploits all the existing pilot sequences as well as the structured dynamics of the channel. In the first step, least squares (LS) estimates of the channels associated with dedicated and common pilots are built. In the second step, an improved unbiased minimum mean square error (UMMSE) estimate of the dedicated channel is obtained by optimally combining the initial LS estimates exploiting the correlation between dedicated and common pilot channels. In the last step, the improved dedicated channel estimate is further refined via Kalman filtering by exploiting the channel temporal correlation.
Generalized pilot assisted channel estimation for WCDMA
EUSIPCO 2005, 13th European Signal Processing Conference, September 4-8, 2005, Antalya, Turkey
Type:
Conference
City:
Antalya
Date:
2005-09-04
Department:
Communication systems
Eurecom Ref:
1683
Copyright:
© EURASIP. Personal use of this material is permitted. The definitive version of this paper was published in EUSIPCO 2005, 13th European Signal Processing Conference, September 4-8, 2005, Antalya, Turkey and is available at :
See also:
PERMALINK : https://www.eurecom.fr/publication/1683
