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. 05, 2015
Filed:
Apr. 01, 2011
Janos Ladvanszky, Pomaz, HU;
Gabor Kovacs, Budapest, HU;
Anna Rhodin, Pixbo, SE;
Telefonaktiebolaget L M Ericsson (publ), Stockholm, SE;
Abstract
The present invention relates to a receiver in a 2×2 Line of Sight Multiple Input Multiple Output, LoS MIMO, system. The receiver is arranged to estimate a first (Ŝ) and a second (Ŝ) signal on the basis of a first (r(t)) and a second (r(t)) signal received from respective first and second transmitters (Tx,Tx). Said received signals (r(t), r(t) comprises a first and second signal. The receiver comprises a first Phase Locked Loop (), PLL, and a second PLL (), which are arranged to respectively determine a first (In) and second (In) demodulated signal from the first (r(t)) and the second (r(t)) received signals. The receiver further comprises an equalizer () which is arranged to estimate the first (Ŝ) and second (Ŝ) signals from the demodulated signals (In,In). The receiver is particularly characterized in that the equalizer () further is arranged to compensate for an independent rotation frequency ftrftr, where ftrand ftrare the respective deviations from the nominal frequency values of a first and a second transmitted signals comprising the first and second signals.