US 11,895,513 B2
Methods of transmitting data using unequally spaced constellations that provide reduced SNR requirements as compared to equally spaced constellations
Maged F. Barsoum, San Jose, CA (US); and Christopher R. Jones, Pacific Palisades, CA (US)
Assigned to Constellation Designs, LLC, Wayne, PA (US)
Filed by Constellation Designs, LLC, Wayne, PA (US)
Filed on Jul. 27, 2021, as Appl. No. 17/443,663.
Application 17/443,663 is a continuation of application No. 17/325,169, filed on May 19, 2021.
Application 17/325,169 is a continuation of application No. 16/728,397, filed on Dec. 27, 2019, granted, now 11,051,187, issued on Jun. 29, 2021.
Application 16/728,397 is a continuation of application No. 16/206,991, filed on Nov. 30, 2018, granted, now 10,567,980, issued on Feb. 18, 2020.
Application 16/206,991 is a continuation of application No. 15/682,475, filed on Aug. 21, 2017, granted, now 10,149,179, issued on Dec. 4, 2018.
Application 15/682,475 is a continuation of application No. 15/200,800, filed on Jul. 1, 2016, granted, now 9,743,292, issued on Aug. 22, 2017.
Application 15/200,800 is a continuation of application No. 14/491,731, filed on Sep. 19, 2014, granted, now 9,385,832, issued on Jul. 5, 2016.
Application 14/491,731 is a continuation of application No. 13/618,630, filed on Sep. 14, 2012, granted, now 8,842,761, issued on Sep. 23, 2014.
Application 13/618,630 is a continuation of application No. 13/118,921, filed on May 31, 2011, granted, now 8,270,511, issued on Sep. 18, 2012.
Application 13/118,921 is a continuation of application No. 12/156,989, filed on Jun. 5, 2008, granted, now 7,978,777, issued on Jul. 12, 2011.
Claims priority of provisional application 60/933,319, filed on Jun. 5, 2007.
Prior Publication US 2021/0360443 A1, Nov. 18, 2021
Int. Cl. H04W 24/02 (2009.01); H04L 1/00 (2006.01); H04L 27/34 (2006.01); H04B 17/336 (2015.01); H03M 13/25 (2006.01); H03M 13/00 (2006.01); H04L 27/38 (2006.01); H04B 15/00 (2006.01)
CPC H04W 24/02 (2013.01) [H03M 13/255 (2013.01); H03M 13/6325 (2013.01); H04B 15/00 (2013.01); H04B 17/336 (2015.01); H04L 1/0003 (2013.01); H04L 1/0009 (2013.01); H04L 27/3405 (2013.01); H04L 27/3483 (2013.01); H04L 27/3809 (2013.01)] 60 Claims
OG exemplary drawing
 
1. A method of transmitting data, comprising:
receiving bits at a transmitter comprising a coder, a mapper, and a modulator;
providing encoded bits to the mapper from the coder via a coupling with the mapper, where the encoded bits are output by the coder based upon the received bits using a Low Density Parity Check (LDPC) code;
mapping the encoded bits to symbols in a symbol constellation using the mapper, where the symbol constellation is selected from a plurality of symbol constellations that includes a group of symbol constellations that each have the same number of constellation points and comprise a ring of constellation points that are unequally spaced along the ring; and
transmitting a signal via a communication channel having a channel signal-to-noise ratio (SNR) based upon symbols received at the modulator via a coupling with the mapper;
wherein labels and spacing of the constellation points in each of the symbol constellations in the group of symbol constellations are arranged such that the symbol constellation is capable of providing a given capacity at a reduced signal-to-noise ratio as compared to a similar symbol constellation that differs only in that the constellation points in the ring are equally spaced around the ring.