US 12,278,682 B2
Spatial modulation system and method thereof
Yijun Zhou, Singapore (SG); Yan Wah Michael Chia, Singapore (SG); and Xianming Qing, Singapore (SG)
Assigned to Agency for Science, Technology and Research, Singapore (SG)
Appl. No. 18/284,022
Filed by Agency for Science, Technology and Research, Singapore (SG)
PCT Filed Mar. 28, 2022, PCT No. PCT/SG2022/050170
§ 371(c)(1), (2) Date Sep. 25, 2023,
PCT Pub. No. WO2022/203611, PCT Pub. Date Sep. 22, 2022.
Claims priority of application No. 10202103162Q (SG), filed on Mar. 26, 2021.
Prior Publication US 2024/0162964 A1, May 16, 2024
Int. Cl. H04B 7/06 (2006.01); H04B 7/0426 (2017.01)
CPC H04B 7/0691 (2013.01) [H04B 7/0426 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of spatial modulation using an antenna array comprising a plurality of radiating elements having a plurality of power amplifiers communicatively coupled thereto, respectively, the method comprising:
determining an amplitude of an output signal to be formed in space by the antenna array based on an input signal;
determining a plurality of output amplitude levels for the plurality of radiating elements, respectively, based on the amplitude of the output signal and a current output amplitude level of the antenna array;
generating one or more first signals for a first subarray of the antenna array and one or more second signals for a second subarray of the antenna array based on the input signal;
assigning the plurality of output amplitude levels determined to the plurality of power amplifiers of the plurality of radiating elements, respectively; and
sending the one or more first signals to radiating elements of the first subarray and sending the one or more second signals to radiating elements of the second subarray for transmission therefrom to form a combined signal in space as the output signal, wherein
the current output amplitude level of the antenna array corresponds to a candidate output amplitude level of an ordered set of candidate output amplitude levels configured for the antenna array based on an output amplitude range of the antenna array, and
the first subarray comprises one or more first concentric radiating element pairs and the second subarray comprises one or more second concentric radiating element pairs.