US 11,754,669 B2
Radar coordination for multi-radar coexistence
Kapil Gulati, Belle Mead, NJ (US); Khurram Usman Mazher, Austin, TX (US); and Junyi Li, Chester, NJ (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Sep. 29, 2020, as Appl. No. 17/37,288.
Claims priority of provisional application 62/908,356, filed on Sep. 30, 2019.
Prior Publication US 2021/0096234 A1, Apr. 1, 2021
Int. Cl. G01S 7/02 (2006.01); G01S 13/28 (2006.01); G01S 13/32 (2006.01); G01S 13/931 (2020.01); G01S 7/292 (2006.01); G01S 13/58 (2006.01)
CPC G01S 7/0234 (2021.05) [G01S 7/292 (2013.01); G01S 13/288 (2013.01); G01S 13/325 (2013.01); G01S 13/584 (2013.01); G01S 13/931 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a receiver radar configured to:
receive, from a transmitter radar, a plurality of chirps of a radar signal, wherein the plurality of chirps of the radar signal are phase coded according to a first set of phase-shift keying (PSK) modulated phase-coded symbols and a second set of PSK modulated phase-coded symbols, wherein the first set of PSK modulated phase-coded symbols convey a plurality of encoded information bits, and wherein the second set of PSK modulated phase-coded symbols are reference symbols having a known phase modulation;
determine a phase difference between the receiver radar and the transmitter radar based on a phase of the plurality of chirps of the radar signal phase coded according to the second set of PSK modulated phase-coded symbols;
equalize the phase of the plurality of chirps of the radar signal based on the determined phase difference;
determine a phase code of the first set of PSK modulated phase-coded symbols based on the equalized phase of the plurality of chirps; and
decode the plurality of encoded information bits based on the phase code of the first set of PSK modulated phase-coded symbols.