InterDigital Inc (IDCC)

[Gamco]

United States Patent 9,887,808
Kwak , et al. February 6, 2018

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:
1000003106110

Appl. No.:
15/433,011

Filed:
February 15, 2017


Prior Publication Data






Document Identifier

Publication Date

US 20170163382 A1 Jun 8, 2017



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Filing Date

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Issue Date

15061703 Mar 4, 2016 9608772
14695989 Apr 5, 2016 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: 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 1/0606 (20130101); Y02B 70/30 (20130101); H04L 2027/0046 (20130101); H04L 5/0023 (20130101)
Current International Class: H04L 27/26 (20060101); H04L 1/00 (20060101); H04L 1/06 (20060101); H04B 7/0417 (20170101); H04L 27/156 (20060101); H04B 7/06 (20060101); H04L 27/00 (20060101); H04L 5/00 (20060101)

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