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:
Aug. 23, 2016
Filed:
Jul. 15, 2014
Alcatel-lucent Usa Inc., Murray Hill, NJ (US);
Alexei Ashikhmin, Morristown, NJ (US);
Thomas L. Marzetta, Summit, NJ (US);
Alcatel Lucent, Boulogne-Billancourt, FR;
Abstract
In exemplary LSAS (large-scale antenna system) networks, uplink signals are processed to compensate for pilot contamination. Slow-fading coefficients are generated for terminals in the wireless network, and postcoding matrices are generated based on the slow-fading coefficients and terminal transmit power levels. Uplink signals are received from the terminals, and M-dimensional postcoding is performed to generate estimated uplink signals from the received uplink signals, where M is the number of antennas at a base station of the wireless network. The postcoding matrices are applied to the estimated uplink signals to compensate for pilot contamination. The improved technique used to generate postcoding matrices depends on whether the M-dimensional postcoding involves matched filtering or zero forcing. Postcoding matrices generated using improved techniques work better than those generated independent of the terminal transmit power levels by inverting slow-fading coefficient matrices for LSAS networks having intermediate numbers (>10 and <1000) of antennas per base station.