US 10,892,926 B2
Method and device for transmitting signal by switching phase in mobile communication system
Seijoon Shim, Seoul (KR); Hayoung Yang, Yongin-si (KR); Chongdon Kim, Seongnam-si (KR); and Chanho Choi, Hwaseong-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Appl. No. 16/325,633
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
PCT Filed Aug. 18, 2017, PCT No. PCT/KR2017/009000
§ 371(c)(1), (2) Date Feb. 14, 2019,
PCT Pub. No. WO2018/034530, PCT Pub. Date Feb. 22, 2018.
Claims priority of application No. 10-2016-0104789 (KR), filed on Aug. 18, 2016.
Prior Publication US 2019/0215204 A1, Jul. 11, 2019
Int. Cl. H04L 27/20 (2006.01); H04L 5/00 (2006.01); H04B 17/12 (2015.01); H04B 7/06 (2006.01); H04L 25/02 (2006.01); H04B 17/309 (2015.01); H04L 5/14 (2006.01); H04L 27/26 (2006.01)
CPC H04L 27/2003 (2013.01) [H04B 7/0671 (2013.01); H04B 7/0682 (2013.01); H04B 17/12 (2015.01); H04B 17/309 (2015.01); H04L 5/006 (2013.01); H04L 5/0048 (2013.01); H04L 5/0057 (2013.01); H04L 5/14 (2013.01); H04L 25/02 (2013.01); H04L 27/26 (2013.01); H04L 27/2657 (2013.01); H04L 27/2675 (2013.01); H04L 5/001 (2013.01); H04L 5/0023 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A signal transmission method performed by a transmitter, the method comprising:
estimating a transmit correlation between transmission paths;
determining phase rotation values to be applied to a transmission signal from a plurality of predetermined phase rotation values stored in the transmitter based on the estimated transmit correlation;
applying phase rotation to the transmission signal based on the phase rotation values, wherein the phase rotation values are determined by an equation:

OG Complex Work Unit Drawing
where φl,0 and φl,1 denote the phase rotation values, a denotes the transmit correlation, φα denotes a phase angle of α, and l denotes an index of a small unit constituting a frequency band; and
transmitting the transmission signal.