The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2016
Filed:
Mar. 01, 2011
Ari Kangas, Lidingö, SE;
Anders Lamm, Mölndal, SE;
Torbjörn Wigren, Uppsala, SE;
TELEFONAKTIEBOLAGET L M ERICSSON, Stockholm, SE;
Abstract
A method for uplink channel estimation comprises providing of a channel state model in a channel estimator. An uplink radio signal of a present time slot is obtained in the channel estimator as well as a series of transmit power control commands issued for controlling a transmit power of the uplink radio signal. A delay between the time a transmit power control command is issued and the time that the transmit power control command is applied is estimated based on measurements of the particular received uplink radio signal. Channel states are adapted based on a transmit power control command compatible with the estimated delay. After the adaptation, channel states of the present time slot are estimated in the channel estimator, by tracking the demodulated uplink radio signal with the channel state model. A channel estimator performing such method is also described.