US 12,335,081 B2
Ultra wide band signals using orthogonal time frequency space modulation
Shlomo Selim Rakib, San Jose, CA (US); Ronny Hadani, San Jose, CA (US); Shachar Kons, San Jose, CA (US); and Clayton Ambrose, San Jose, CA (US)
Assigned to Cohere Technologies, Inc., San Jose, CA (US)
Appl. No. 18/555,391
Filed by Cohere Technologies, Inc., San Jose, CA (US)
PCT Filed Apr. 29, 2022, PCT No. PCT/US2022/072002
§ 371(c)(1), (2) Date Oct. 13, 2023,
PCT Pub. No. WO2022/232830, PCT Pub. Date Nov. 3, 2022.
Claims priority of provisional application 63/181,828, filed on Apr. 29, 2021.
Prior Publication US 2024/0205065 A1, Jun. 20, 2024
Int. Cl. H04L 27/26 (2006.01); H04L 27/10 (2006.01)
CPC H04L 27/2639 (2013.01) [H04L 27/103 (2013.01); H04L 27/2628 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method of wireless communication, comprising:
mapping information bits to transmission resources in a two-dimensional delay-Doppler grid, wherein the two-dimensional delay-Doppler grid comprises N Doppler elements and M delay elements, where N and M are positive integers;
converting a result of the mapping to an orthogonal time frequency space (OTFS) waveform comprising sequences of pulses;
mapping the sequences of pulses to predetermined frequency bands and summing frequency-mapped signals to generate a resulting signal; and
generating an ultra-wideband (UWB) signal by spreading the resulting signal over a bandwidth greater than 200 MHz using a spreading scheme.