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. 22, 2017
Filed:
Mar. 30, 2015
Applicant:
Apple Inc., Cupertino, CA (US);
Inventors:
Jianglei Ma, Kanata, CA;
Ming Jia, Ottawa, CA;
Wen Tong, Ottawa, CA;
Peiying Zhu, Kanata, CA;
Claude Royer, GatĂneau, CA;
Assignee:
APPLE INC., Cupertino, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 27/26 (2006.01); H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01);
U.S. Cl.
CPC ...
H04L 27/261 (2013.01); H04B 7/06 (2013.01); H04B 7/0615 (2013.01); H04B 7/0684 (2013.01); H04L 5/0026 (2013.01); H04L 5/0048 (2013.01); H04L 25/0204 (2013.01); H04L 25/0226 (2013.01); H04L 25/0234 (2013.01);
Abstract
Pilot, preamble and midamble patterns are provided that are particularly suited for four transmit antenna OFDM systems. Pilots are inserted in a scattered manner for each of the four antennas, either uncoded, space-time coded in pairs, space-time frequency coded in pairs, or space-time-frequency coded.