	US 11,870,579 B1
	Systems and methods for introducing time diversity in Wifi transmissions
Yakun Sun, Sunnyvale, CA (US); Hongyuan Zhang, Fremont, CA (US); Liwen Chu, San Ramon, CA (US); and Hui-Ling Lou, Sunnyvale, CA (US)
Assigned to Marvell Asia Pte, Ltd., Singapore (SG)
Filed by Marvell Asia Pte, Ltd., Singapore (SG)
Filed on Nov. 29, 2021, as Appl. No. 17/536,381.
Application 17/536,381 is a continuation of application No. 16/194,139, filed on Nov. 16, 2018, granted, now 11,190,305.
Application 16/194,139 is a continuation of application No. 14/582,568, filed on Dec. 24, 2014, granted, now 10,135,582, issued on Nov. 20, 2018.
Claims priority of provisional application 61/935,206, filed on Feb. 3, 2014.
Claims priority of provisional application 61/920,949, filed on Dec. 26, 2013.
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 1/00 (2006.01); H04L 1/1867 (2023.01); H04L 1/1825 (2023.01); H04L 1/08 (2006.01); H04B 7/06 (2006.01)

CPC H04L 1/0071 (2013.01) [H04L 1/0042 (2013.01); H04L 1/08 (2013.01); H04L 1/1825 (2013.01); H04L 1/1887 (2013.01); H04L 1/1893 (2013.01); H04B 7/0669 (2013.01)]

18 Claims

1. A method for introducing time diversity in a transmitter, the method comprising:

receiving a request to retransmit data, wherein the request indicates a retransmission number;

obtaining a plurality of bits;

parsing the plurality of bits into a plurality of streams;

encoding the plurality of streams into a plurality of symbols;

mapping the plurality of symbols to a respective plurality of tones based on the retransmission number, wherein the mapping is time-varying and comprises:

arranging the plurality of symbols into an interleaver matrix, and

modifying, based on the retransmission number, a plurality of rows of the interleaver matrix;

generating, based on the time-varying mapping, a plurality of time-domain signals; and

transmitting the plurality of time-domain signals.