US 11,870,532 B2
Spatial multiplexing via twisted pairs
Roy Kinamon, Tel Aviv (IL); Gal Zuckerman, Holon (IL); and Oz Liv, Tel Aviv (IL)
Assigned to Cellium Technologies, LTD., Tel Aviv (IL)
Filed by Cellium Technologies, Ltd., Tel Aviv (IL)
Filed on Mar. 1, 2023, as Appl. No. 18/176,655.
Application 18/176,655 is a continuation of application No. 17/651,953, filed on Feb. 22, 2022, granted, now 11,637,612.
Application 17/651,953 is a continuation in part of application No. 16/539,514, filed on Aug. 13, 2019, granted, now 11,303,346, issued on Apr. 12, 2022.
Application 16/539,514 is a continuation in part of application No. 16/149,768, filed on Oct. 2, 2018, granted, now 10,484,074, issued on Nov. 19, 2019.
Application 16/149,768 is a continuation in part of application No. 15/941,873, filed on Mar. 30, 2018, granted, now 10,148,336, issued on Dec. 4, 2018.
Application 15/941,873 is a continuation of application No. 15/894,182, filed on Feb. 12, 2018, granted, now 10,177,832, issued on Jan. 8, 2019.
Application 15/894,182 is a continuation in part of application No. 15/244,306, filed on Aug. 23, 2016, granted, now 10,027,374, issued on Jul. 17, 2018.
Claims priority of provisional application 62/209,404, filed on Aug. 25, 2015.
Prior Publication US 2023/0208501 A1, Jun. 29, 2023
Int. Cl. H04B 7/06 (2006.01); H04L 5/00 (2006.01); H04B 10/25 (2013.01); H04B 10/114 (2013.01); H04B 7/0413 (2017.01); H04B 10/40 (2013.01)
CPC H04B 7/0697 (2013.01) [H04B 7/0413 (2013.01); H04B 7/06 (2013.01); H04B 10/114 (2013.01); H04B 10/1149 (2013.01); H04B 10/25 (2013.01); H04B 10/40 (2013.01); H04L 5/00 (2013.01); H04L 5/0032 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system operative to replicate an exact frequency match among a plurality of output signals associated with spatial multiplexing, comprising:
a plurality of twisted pairs; and
a converter configured to receive a plurality of input signals, in which each of the plurality of input signals is an orthogonal frequency division multiplexing (OFDM) signal comprising a plurality of sub-carriers, and in which the plurality of input signals are associated respectively with a plurality of streams generated in conjunction with spatial multiplexing;
wherein the converter is further configured to:
obtain, via the plurality of twisted pairs, a reference signal associated with at least one original conversion signal, in which the at least one original conversion signal was used originally outside the converter to establish respective frequency ranges associated with the plurality of input signals;
utilize the reference signal to reproduce the at least one original conversion signal in a form of a respective at least one replica conversion signal; and
use the at least one replica conversion signal to respectively convert the plurality of input signals into the plurality of output signals, the plurality of output signals all occupying a same single frequency range, thereby causing the plurality of sub-carriers of any of the plurality of output signals to now exactly match in frequency a respective plurality of sub-carriers of any of the other output signals, thereby now enabling wireless transmission and successful decoding of the plurality of output signals, or a derivative thereof, in conjunction with the spatial multiplexing.