US 11,889,326 B2
Methods of receiving data transmitted 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. 17/386,206.
Application 17/386,206 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 2021/0360441 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 receiving data, comprising:
receiving a signal via a communication channel having a channel signal-to-noise ratio (SNR) using a receiver comprising a demodulator, a demapper, and a decoder;
demodulating the received signal into a demodulated signal using the demodulator;
providing the demodulated signal to the demapper via a coupling between the demodulator and the demapper;
determining likelihoods using the demapper based upon the demodulated signal and a symbol constellation 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
providing the determined likelihoods to the decoder via a coupling between the demapper and the decoder; and
providing a sequence of received bits from the decoder using the determined likelihoods to provide a sequence of received bits based upon a low density parity check (LDPC) code;
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.