公开(公告)号：US20220029726A1

公开(公告)日：2022-01-27

申请号：US17483442

申请日：2021-09-23

Applicant: INTEL CORPORATION

Inventor： Alexander Maltsev ,  Carlos Cordeiro ,  Artyom Lomayev ,  Michael Genossar ,  Claudio Da Silva

IPC: H04J13/00 ,  H03M13/11 ,  H04L27/26 ,  H04L1/00

Abstract: An apparatus of a transmitter may include, for example, a Golay builder to build modulated Golay sequences for at least a non-EDMG Short Training Field (L-STF), and a non-EDMG Channel Estimation Field (L-CEF) of a PPDU; a scrambler to generate scrambled bits by scrambling bits of a non-EDMG header (L-header) and a data field of the PPDU; an encoder to encode the scrambled bits into encoded bits according to a low-density parity-check (LDPC) code; a constellation mapper to map the encoded bits into a stream of constellation points according to a constellation scheme; a spreader to spread the stream of constellation points according to a Golay sequence; and a transmit chain mapper to map a bit stream output from the Golay builder and the spreader to a plurality of transmit chains by applying a spatial expansion with relative cyclic shift over the plurality of transmit chains.

公开(公告)号：US20210168010A1

公开(公告)日：2021-06-03

申请号：US17120473

申请日：2020-12-14

Applicant: INTEL CORPORATION

Inventor： Artyom Lomayev ,  Alexander Maltsev ,  Claudio Da Silva ,  Carlos Cordeiro

IPC: H04L27/26 ,  H04L5/00

Abstract: Some demonstrative embodiments include apparatuses, devices, systems and methods of communicating a PPDU including a training field. For example, an Enhanced Directional Multi-Gigabit (DMG) (EDMG) wireless communication station may be configured to determine one or more Orthogonal Frequency Division Multiplexing (OFDM) Training (TRN) sequences in a frequency domain based on a count of one or more 2.16 Gigahertz (GHz) channels in a channel bandwidth for transmission of an EDMG PPDU including a TRN field; generate one or more OFDM TRN waveforms in a time domain based on the one or more OFDM TRN sequences, respectively, and based on an OFDM TRN mapping matrix, which is based on a count of the one or more transmit chains; and transmit an OFDM mode transmission of the EDMG PPDU over the channel bandwidth, the OFDM mode transmission comprising transmission of the TRN field based on the one or more OFDM TRN waveforms.

公开(公告)号：US20210044407A1

公开(公告)日：2021-02-11

申请号：US17083502

申请日：2020-10-29

Applicant: INTEL CORPORATION

Inventor： Artyom Lomayev ,  Claudio Da Silva ,  Alexander Maltsev ,  Carlos Cordeiro

IPC: H04L5/00 ,  H04L25/02

Abstract: For example, a first device may calibrate a reference channel estimation based on a plurality of first channel estimation measurements, the plurality of first channel estimation measurements corresponding to first PPDUs received from a second device over a wireless channel, wherein two consecutive channel estimation measurements of the plurality of first channel estimation measurements are separated by no more than a first time interval; and determine a plurality of second channel estimation measurements for detection of a change in an environment of the wireless channel based on the reference channel estimation, wherein the plurality of second channel estimation measurements corresponds to a plurality of second PPDUs received from the second device over the wireless channel, wherein two consecutive channel estimation measurements of the plurality of second channel estimation measurements are separated by at least a second time interval, the second time interval is longer than the first time interval.