公开(公告)号：US20210344542A1

公开(公告)日：2021-11-04

申请号：US17278317

申请日：2019-10-07

Applicant: Sony Corporation

Inventor： Nafiseh MAZLOUM ,  Ove EDFORS

IPC: H04L27/26 ,  H04L5/00 ,  H04W68/00 ,  H04L27/10 ,  H04W52/02 ,  H04L1/00

Abstract: A method includes obtaining a reference signal waveform (b, b1-b5) which is defined in accordance with a non-coherent modulation scheme. The method also includes—shaping the reference signal waveform (b, b1-b5) to obtain at least one signal waveform (x˜) associated with one or more subcarriers (K) of a plurality of subcarriers (301-303). The method further includes inputting the at least one signal waveform to at least one corresponding channel (1552) of a multi-channel orthogonal frequency division multiplex, OFDM, modulator (F, 1502, 1503, 1504) and transmitting an OFDM symbol (s) output by the OFDM modulator (F, 1502, 1503, 1504).

公开(公告)号：US20220021494A1

公开(公告)日：2022-01-20

申请号：US17059923

申请日：2019-06-03

Applicant: Sony Corporation

Inventor： Nafiseh MAZLOUM ,  Ove EDFORS

IPC: H04L5/00 ,  H04L27/26 ,  H04W52/02

Abstract: Orthogonal Frequency Division Multiplex and Non-Coherent Demodulation A method includes obtaining a reference signal waveform which is defined in accordance with a non-coherent modulation scheme. The method also includes shaping the reference signal waveform to obtain at least one signal waveform associated with one or more subcarriers of a plurality of subcarriers. The method also includes inputting the at least one signal waveform to at least one corresponding channel of a multi-channel orthogonal frequency division multiplex, OFDM, modulator. The method further includes transmitting an OFDM symbol output by the OFDM modulator. 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. For example, the reference signal waveform can be a reference wake-up signal waveform.