US 10,200,227 C1 (13,195th)
Pre-coding in multi-user MIMO
Steve Shattil, Cheyenne, WY (US)
Filed by Genghiscomm Holdings, LLC, Boulder, CO (US)
Assigned to GENGHISCOMM HOLDINGS, LLC, Boulder, CO (US)
Reexamination Request No. 90/019,411, Feb. 9, 2024.
Reexamination Certificate for Patent 10,200,227, issued Feb. 5, 2019, Appl. No. 15/396,567, Dec. 31, 2016.
Application 90/019,411 is a continuation in part of application No. 14/168,466, filed on Jan. 30, 2014, granted, now 9,819,449.
Application 14/168,466 is a continuation in part of application No. 11/187,107, filed on Jul. 22, 2005, granted, now 8,670,390.
Application 14/168,466 is a continuation in part of application No. 10/145,854, filed on May 14, 2002, abandoned.
Claims priority of provisional application 60/598,187, filed on Aug. 2, 2004.
Ex Parte Reexamination Certificate issued on Feb. 26, 2026.
Int. Cl. H04L 27/26 (2006.01); H04B 7/026 (2017.01); H04B 7/0452 (2017.01); H04B 17/391 (2015.01); H04J 13/00 (2011.01); H04L 1/00 (2006.01); H04L 1/06 (2006.01); H04L 5/00 (2006.01); H04L 45/24 (2022.01); H04W 52/24 (2009.01); H04W 52/34 (2009.01); H04W 72/044 (2023.01)
CPC H04L 27/2636 (2013.01) [H04B 7/026 (2013.01); H04J 13/0003 (2013.01); H04J 13/004 (2013.01); H04L 1/0077 (2013.01); H04L 1/0681 (2013.01); H04L 27/2602 (2013.01); H04L 27/2615 (2013.01); H04L 45/24 (2013.01); H04W 52/241 (2013.01); H04B 7/0452 (2013.01); H04B 17/3911 (2015.01); H04L 2001/0097 (2013.01); H04L 5/0021 (2013.01); H04L 5/005 (2013.01); H04L 5/0051 (2013.01); H04L 27/2601 (2013.01); H04L 27/2614 (2013.01); H04W 52/346 (2013.01); H04W 72/046 (2013.01)]
OG exemplary drawing
AS A RESULT OF REEXAMINATION, IT HAS BEEN DETERMINED THAT:
The patentability of claims 1-7 and 9-29 is confirmed.
Claim 8 was not reexamined.
1. A non-transitory computer-readable medium including computer-readable program code stored thereon, the computer-readable program code configured to be executed by at least one processor to implement a method for generating an Orthogonal Frequency Division Multiplexing (OFDM) transmission signal, the method comprising:
employing an invertible transform to spread a plurality of data symbols with complex-valued coefficients to generate a plurality of spread data symbols;
mapping the spread data symbols to a plurality of OFDM subcarriers; and
responsive to the mapping, modulating the spread data symbols onto the plurality of OFDM subcarriers to produce the OFDM transmission signal comprising a superposition of the OFDM subcarriers, wherein employing the invertible transform is configured to provide the superposition with a reduced peak-to-average power ratio.