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. 28, 2017
Filed:
Mar. 04, 2016
Interdigital Technology Corporation, Wilmington, DE (US);
Jaeyoung Kwak, Morganville, NJ (US);
Robert L. Olesen, Huntington, NY (US);
Aykut Bultan, Santa Clara, CA (US);
Eldad M. Zeira, Huntington, NY (US);
Changsoo Koo, Melville, NY (US);
Fatih M. Ozluturk, Sands Point, NY (US);
Yuejin Huang, Coram, NY (US);
Kalpendu R. Pasad, Cupertino, CA (US);
InterDigital Technology Corporation, Wilmington, DE (US);
Abstract
The present invention is related to a method and apparatus for implementing space frequency block coding (SFBC) in an orthogonal frequency division multiplexing (OFDM) wireless communication system. The present invention is applicable to both a closed loop mode and an open loop mode. In the closed loop mode, power loading and eigen-beamforming are performed based on channel state information (CSI). A channel coded data stream is multiplexed into two or more data streams. Power loading is performed based on the CSI on each of the multiplexed data streams. SFBC encoding is performed on the data streams for each of the paired subcarriers. Then, eigen-beamforming is performed based on the CSI to distribute eigenbeams to multiple transmit antennas. The power loading may be performed on two or more SFBC encoding blocks or on each eigenmodes. Additionally, the power loading may be performed across subcarriers or subcarrier groups for weak eigenmodes.