US 12,255,710 B2
Signal generation method, transmission device, reception method, and reception device
Yutaka Murakami, Kanagawa (JP); Tomohiro Kimura, Osaka (JP); and Mikihiro Ouchi, Osaka (JP)
Assigned to SUN PATENT TRUST, New York, NY (US)
Filed by Sun Patent Trust, New York, NY (US)
Filed on Oct. 26, 2023, as Appl. No. 18/384,036.
Application 18/384,036 is a continuation of application No. 18/082,916, filed on Dec. 16, 2022, granted, now 11,843,430.
Application 18/082,916 is a continuation of application No. 17/728,025, filed on Apr. 25, 2022, granted, now 11,575,415, issued on Feb. 7, 2023.
Application 17/728,025 is a continuation of application No. 17/346,624, filed on Jun. 14, 2021, granted, now 11,362,709, issued on Jun. 14, 2022.
Application 17/346,624 is a continuation of application No. 17/038,341, filed on Sep. 30, 2020, granted, now 11,082,100, issued on Aug. 3, 2021.
Application 17/038,341 is a continuation of application No. 16/729,752, filed on Dec. 30, 2019, granted, now 10,868,593, issued on Dec. 15, 2020.
Application 16/729,752 is a continuation of application No. 16/527,583, filed on Jul. 31, 2019, granted, now 10,574,314, issued on Feb. 25, 2020.
Application 16/527,583 is a continuation of application No. 16/371,363, filed on Apr. 1, 2019, granted, now 10,498,413, issued on Dec. 3, 2019.
Application 16/371,363 is a continuation of application No. 16/164,044, filed on Oct. 18, 2018, granted, now 10,298,302, issued on May 21, 2019.
Application 16/164,044 is a continuation of application No. 15/991,349, filed on May 29, 2018, granted, now 10,158,407, issued on Dec. 18, 2018.
Application 15/991,349 is a continuation of application No. 15/143,681, filed on May 2, 2016, granted, now 10,014,919, issued on Jul. 3, 2018.
Application 15/143,681 is a continuation of application No. 14/442,899, granted, now 9,374,141, issued on Jun. 21, 2016, previously published as PCT/JP2013/007215, filed on Dec. 6, 2013.
Claims priority of application No. 2012-268858 (JP), filed on Dec. 7, 2012; and application No. 2012-268859 (JP), filed on Dec. 7, 2012.
Prior Publication US 2024/0178891 A1, May 30, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/0456 (2017.01); H04B 7/04 (2017.01); H04B 7/0413 (2017.01); H04B 7/06 (2006.01); H04L 23/00 (2006.01); H04L 25/03 (2006.01); H04L 27/12 (2006.01); H04L 27/14 (2006.01); H04L 27/26 (2006.01); H04L 27/36 (2006.01); H04W 72/30 (2023.01); H04W 72/542 (2023.01)
CPC H04B 7/0469 (2013.01) [H04B 7/04 (2013.01); H04B 7/0413 (2013.01); H04B 7/0697 (2013.01); H04L 23/00 (2013.01); H04L 25/03 (2013.01); H04L 27/12 (2013.01); H04L 27/14 (2013.01); H04L 27/26 (2013.01); H04L 27/36 (2013.01); H04L 27/2601 (2013.01); H04W 72/30 (2023.01); H04W 72/542 (2023.01)] 4 Claims
OG exemplary drawing
 
1. A transmission method used in a transmission system that includes a first transmission station and a second transmission station, the transmission method comprising:
performing, by the first transmission station, first phase changing on signals included in a first orthogonal frequency-division multiplexing (OFDM) frame according to a first phase changing pattern or a second phase changing pattern;
performing, by the second transmission station, second phase changing on signals included in a second OFDM frame according to a third phase changing pattern or a fourth phase changing pattern, the second OFDM frame being identical to the first OFDM frame;
converting, by the first transmission station, a first control information modulated signals to generate a first preamble, and converting, by a first inverse fast fourier transform (IFFT) unit of the first transmission station, the first OFDM frame to generate a first OFDM signal, the first control information modulated signals being generated from control information;
converting, by the second transmission station, a second control information modulated signals to generate a second preamble, and converting, by a second inverse fast fourier transform (IFFT) unit of the second transmission station, the second OFDM frame to generate a second OFDM signal, the second control information modulated signals being identical to the first control information modulated signals;
transmitting, by the first transmission station, the first preamble and the first OFDM signal; and
transmitting, by the second transmission station, the second preamble and the second OFDM signal,
wherein the control information includes information indicating the phase changing patterns used for the first phase changing and the second phase changing, and the first preamble is generated without undergoing the first phase changing, and
the second preamble is generated without undergoing the second phase changing, and the first OFDM frame includes modulated signals generated by using a non-uniform 256 quadrature amplitude modulation scheme having 256 candidate signal points, a real component value of each candidate signal point is one from among 16 candidate values, an imaginary component value of each candidate signal point is one from among the 16 candidate values.