Tuesday, March 28, 2017 3:53:29 PM
Kwak , et al. March 28, 2017
Method and apparatus for implementing space frequency block coding in an orthogonal frequency division multiplexing wireless communication system
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.
Inventors:
Kwak; Jaeyoung (Morganville, NJ), Olesen; Robert L. (Huntington, NY), Bultan; Aykut (Santa Clara, CA), Zeira; Eldad M. (Huntington, NY), Koo; Changsoo (Melville, NY), Ozluturk; Fatih M. (Sands Point, NY), Huang; Yuejin (Coram, NY), Pasad; Kalpendu R. (Cupertino, CA)
Applicant:
Name
City
State
Country
Type
INTERDIGITAL TECHNOLOGY CORPORATION
Wilmington
DE
US
Assignee:
InterDigital Technology Corporation (Wilmington, DE)
Family ID:
1000002487921
Appl. No.:
15/061,703
Filed:
March 4, 2016
Prior Publication Data
Document Identifier
Publication Date
US 20160191208 A1 Jun 30, 2016
Related U.S. Patent Documents
Application Number
Filing Date
Patent Number
Issue Date
14695989 Apr 24, 2015 9306702
14021783 Jun 9, 2015 9054924
12360351 Sep 10, 2013 8532210
11201695 Mar 17, 2009 7505529
60601338 Aug 12, 2004
Current U.S. Class: 1/1
Current CPC Class: H04L 1/0606 (20130101); H04B 7/0417 (20130101); H04B 7/066 (20130101); H04B 7/0626 (20130101); H04B 7/0632 (20130101); H04L 1/0003 (20130101); H04L 1/0009 (20130101); H04L 1/0026 (20130101); H04L 5/006 (20130101); H04L 5/0007 (20130101); H04L 27/156 (20130101); H04L 27/2626 (20130101); H04L 5/0023 (20130101); Y02B 60/31 (20130101)
Current International Class: H04B 7/08 (20060101); H04L 1/06 (20060101); H04B 7/06 (20060101); H04L 1/00 (20060101); H04L 27/26 (20060101); H04L 27/156 (20060101); H04B 7/0417 (20170101); H04L 5/00 (20060101)
Field of Search: ;375/260,267,347,349
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