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:
Mar. 12, 2013
Filed:
Apr. 09, 2010
John S. Sadowsky, Mesa, AZ (US);
Minnie Ho, Los Altos, CA (US);
Eric A. Jacobsen, Scottsdale, AZ (US);
Alexander A. Maltsev, Nizhny Novgorod, RU;
Ali S. Sadri, San Diego, CA (US);
Sumeet Sandhu, San Jose, CA (US);
John S. Sadowsky, Mesa, AZ (US);
Minnie Ho, Los Altos, CA (US);
Eric A. Jacobsen, Scottsdale, AZ (US);
Alexander A. Maltsev, Nizhny Novgorod, RU;
Ali S. Sadri, San Diego, CA (US);
Sumeet Sandhu, San Jose, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A MIMO transmitter and method for transmitting a group of sequential OFDM symbols on a downlink channel using a plurality of antennas is disclosed herein. Groups of OFDM subcarriers are individually modulated in accordance with spatial-frequency subcarrier modulation assignments to generate groups of symbol-modulated subcarriers, corresponding symbol-modulated subcarriers are combined for transmission on each of a plurality of spatial channels, and beamforming is performed on the combined symbol-modulated subcarriers for transmission over the spatial channels. The channel comprises a plurality of the groups of the OFDM subcarriers and the OFDM subcarriers within each group of subcarriers and within each group of sequential OFDM symbols have the same spatial-frequency subcarrier modulation assignments. The spatial-frequency subcarrier modulation assignments for each group are determined based on feedback by a receiver, which is determined from spatial channel characteristics of the spatial channels.