US 12,170,551 B2
Quantization of channel state information in multiple antenna systems
Bartosz Mielczarek, Edmonton (CA); and Witold A. Krzymien, Edmonton (CA)
Assigned to Wi-LAN Inc., Ottawa (CA)
Filed by Wi-LAN Inc., Ottawa (CA)
Filed on Jun. 26, 2023, as Appl. No. 18/214,186.
Application 13/289,957 is a division of application No. 11/754,965, filed on May 29, 2007, granted, now 8,116,391, issued on Feb. 14, 2012.
Application 18/214,186 is a continuation of application No. 17/063,213, filed on Oct. 5, 2020, granted, now 11,689,254.
Application 17/063,213 is a continuation of application No. 16/436,532, filed on Jun. 10, 2019, granted, now 10,797,763, issued on Oct. 6, 2020.
Application 16/436,532 is a continuation of application No. 14/628,570, filed on Feb. 23, 2015, granted, now 10,320,453, issued on Jun. 11, 2019.
Application 14/628,570 is a continuation of application No. 13/289,957, filed on Nov. 4, 2011, granted, now 8,971,467, issued on Mar. 3, 2015.
Claims priority of provisional application 60/808,806, filed on May 26, 2006.
Prior Publication US 2024/0048193 A1, Feb. 8, 2024
Int. Cl. H04B 7/0452 (2017.01); H04B 7/0426 (2017.01); H04B 7/0456 (2017.01); H04B 7/06 (2006.01); H04L 1/00 (2006.01); H04L 1/06 (2006.01); H04L 25/02 (2006.01)
CPC H04B 7/0452 (2013.01) [H04B 7/0434 (2013.01); H04B 7/0456 (2013.01); H04B 7/0617 (2013.01); H04B 7/0632 (2013.01); H04B 7/0658 (2013.01); H04B 7/066 (2013.01); H04L 1/0029 (2013.01); H04L 1/003 (2013.01); H04L 1/0687 (2013.01); H04L 1/0693 (2013.01); H04L 25/0204 (2013.01); H04B 7/0478 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for use by a receiving device, the method comprising:
receiving a signal and determining a precoding matrix associated with a codebook for at least one subcarrier;
transmitting a first index value and a second index value, wherein the determined precoding matrix is determinable by using both the first index value and the second index value;
and receiving a precoded signal using a plurality of antennas based on the first index value and second index value.