US 11,671,297 B2
Orthogonal frequency division multiplex and non-coherent demodulation
Nafiseh Mazloum, Lund (SE); and Ove Edfors, Södra Sandby (SE)
Assigned to Sony Group Corporation, Tokyo (JP)
Appl. No. 17/278,317
Filed by Sony Corporation, Tokyo (JP)
PCT Filed Oct. 7, 2019, PCT No. PCT/EP2019/077108
§ 371(c)(1), (2) Date Mar. 21, 2021,
PCT Pub. No. WO2020/074454, PCT Pub. Date Apr. 16, 2020.
Claims priority of application No. 1830287-7 (SE), filed on Oct. 11, 2018.
Prior Publication US 2021/0344542 A1, Nov. 4, 2021
Int. Cl. H04L 27/26 (2006.01); H04L 1/00 (2006.01); H04L 5/00 (2006.01); H04L 27/10 (2006.01); H04W 52/02 (2009.01); H04W 68/00 (2009.01)
CPC H04L 27/2613 (2013.01) [H04L 1/0003 (2013.01); H04L 5/0051 (2013.01); H04L 27/106 (2013.01); H04L 27/2607 (2013.01); H04L 27/2628 (2013.01); H04W 52/0229 (2013.01); H04W 68/005 (2013.01); H04L 5/0048 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method, comprising:
cutting and cropping a reference signal waveform at sections of the reference signal waveform mapped to cyclic extensions of OFDM symbols of a sequence of OFDM symbols, to obtain reference signal waveform segments, the reference signal waveform and the reference waveform segments being defined in accordance with a non-coherent modulation scheme,
wherein the method further comprises for each one of the reference signal waveform segments:
shaping the respective reference signal waveform segment to obtain a respective at least one signal waveform associated with one or more subcarriers of a plurality of subcarriers,
inputting the respective at least one signal waveform to at least one corresponding channel of a multi-channel orthogonal frequency division multiplex, OFDM, modulator, and
transmitting a respective OFDM symbol (s) of the sequence of OFDM symbols output by the OFDM modulator,
wherein said shaping approximates a baseband representation of a part of the OFDM symbol associated with the one or more subcarriers to the reference signal waveform segment.