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:
Apr. 23, 2019
Filed:
Aug. 28, 2014
Applicant:
Southeast University, Nanjing, CN;
Assignee:
SOUTHEAST UNIVERSITY, Nanjing, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 7/06 (2006.01); H04W 16/28 (2009.01); H04L 1/00 (2006.01); H04B 7/0413 (2017.01); H04L 1/06 (2006.01); H04B 7/0408 (2017.01); H04B 7/0456 (2017.01); H04L 25/03 (2006.01); H04B 7/0452 (2017.01);
U.S. Cl.
CPC ...
H04W 16/28 (2013.01); H04B 7/0408 (2013.01); H04B 7/0413 (2013.01); H04B 7/0456 (2013.01); H04B 7/0617 (2013.01); H04B 7/0669 (2013.01); H04L 1/00 (2013.01); H04L 1/0668 (2013.01); H04L 25/03898 (2013.01); H04B 7/0452 (2013.01); H04B 7/0465 (2013.01); H04L 1/0042 (2013.01);
Abstract
Described herein is an omni-directional transmission scheme allowing signals to transmit from a base station to multiple users in massive MIMO systems with reduced pilot overhead and system complexity. The transmission scheme uses a low-dimensional space-time coding scheme to generate a K-dimensional vector signal, and based on the K-dimensional vector signal, using an omni-directional precoding matrix W to generate an M-dimensional vector signal for transmission over a large number of transmitting antennas, wherein the matrix W comprises M rows and K columns, and K is much smaller than M.