公开(公告)号：US20220029772A1

公开(公告)日：2022-01-27

申请号：US17382263

申请日：2021-07-21

Applicant: QUALCOMM Incorporated

Inventor： Kanke WU ,  Jialing Li CHEN ,  Bin TIAN

IPC: H04L5/00 ,  H04W72/04

Abstract: Duplicated physical layer convergence protocol (PLCP) protocol data unit (PPDU) transmission is described for a wireless device with reduced peak-to-average power ratios (PAPR). One example includes obtaining a first sub-PPDU from to PPDU that includes a data field with data content. A second sub-PPDU may also be obtained by duplicating the PPDU including the data content of the PPDU. At least one of a phase rotation, a phase offset, or a phase ramp is applied to at least a portion of a second set of sub-carrier of a wideband channel. The first sub-PPDU is transmitted on a first set of sub-carriers of the wideband channel and the second sub-PPDU is transmitted on the second set of sub-carriers of the wideband channel.

公开(公告)号：US20210399933A1

公开(公告)日：2021-12-23

申请号：US17353673

申请日：2021-06-21

Applicant: QUALCOMM Incorporated

Inventor： Kanke WU ,  Jialing Li CHEN ,  Lin YANG ,  Bin TIAN

IPC: H04L27/26

Abstract: Various aspects relate generally to the generation and wireless transmission of a long training field (LTF) and a data field within a 320 MHz or 240 MHz bandwidth channel. The LTF includes an LTF sequence based on a concatenation of a plurality of LTF subsequences, each LTF subsequence being associated with a channel bandwidth less than the total bandwidth of the channel, each of the plurality of LTF subsequences being selectively phase-rotated to reduce a peak-to-average power ratio. Each of the plurality of LTF subsequences may be associated with an LTF designed for an 80 MHz bandwidth channel. The LTF and the data field may then be transmitted in a wireless packet to at least one second wireless communication device via the 320 MHz or 240 MHz bandwidth channel.