ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,726,394, issued on Sept. 1, was assigned to SAMSUNG ELECTRONICS Co. Ltd. (Suwon-si, South Korea).
"Transmitter using pi/2-pulse amplitude modulation symbol and spectrum shaping" was invented by Joon Ho Cho (Pohang-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a DFT-spread OFDM transmitter and transmission method and a DFT-spread OFDM receiver and reception method capable of receiving the transmitted signal with a frequency domain spectrum shaping vector designed to easily trade off PAPR for spectral efficiency without inter-symbol interference, the DFT-spread OFDM transmitter including a phase shifter for generating a pi/2 ...