US RE50,309 E1
Backward-compatible long training sequences for wireless communication networks
Jason Alexander Trachewsky, Menlo Park, CA (US); and Rajendra T. Moorti, Mountain View, CA (US)
Assigned to Bell Northern Research, LLC, Chicago, IL (US)
Filed by Bell Northern Research, LLC, Chicago, IL (US)
Filed on Mar. 7, 2023, as Appl. No. 18/118,514.
Application 18/118,514 is a continuation of application No. 17/368,156, filed on Jul. 6, 2021, granted, now RE49509.
Application 17/368,156 is a continuation of application No. 16/686,468, filed on Nov. 18, 2019, granted, now RE48629, issued on Jul. 6, 2021.
Application 12/684,650 is a continuation of application No. 11/188,771, filed on Jul. 26, 2005, granted, now 7,646,703, issued on Jan. 12, 2010.
Application 16/686,468 is a reissue of application No. 12/684,650, filed on Jan. 8, 2010, granted, now 7,990,842, issued on Aug. 2, 2011.
Application 18/118,514 is a reissue of application No. 12/684,650, filed on Jan. 8, 2010, granted, now 7,990,842, issued on Aug. 2, 2011.
Claims priority of provisional application 60/634,102, filed on Dec. 8, 2004.
Claims priority of provisional application 60/591,104, filed on Jul. 27, 2004.
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 27/26 (2006.01); H04L 5/00 (2006.01); H04L 25/02 (2006.01)
CPC H04L 27/2613 (2013.01) [H04L 27/262 (2013.01); H04B 2201/70701 (2013.01); H04B 2201/70706 (2013.01); H04L 5/0048 (2013.01); H04L 25/0226 (2013.01)] 35 Claims
OG exemplary drawing
 
[ 21. A wireless communications device, comprising:
a signal generator that generates an extended long training sequence; and
an Inverse Fourier Transformer operatively coupled to the signal generator,
wherein the Inverse Fourier Transformer processes the extended long training sequence from the signal generator and provides an optimal extended long training sequence with a minimal peak-to-average ratio, and
wherein at least the optimal extended long training sequence is carried by a greater number of subcarriers than a standard wireless networking configuration for an Orthogonal Frequency Division Multiplexing scheme, and
wherein the optimal extended long training sequence includes (i) standard encodings for a training sequence for the subcarriers of the standard wireless networking configuration and (ii) one or more encodings for one or more additional subcarriers of the optimal extended long training sequence that are different from the subcarriers of the standard wireless networking configuration.]