公开(公告)号：US20220255582A1

公开(公告)日：2022-08-11

申请号：US17734489

申请日：2022-05-02

Applicant: Samsung Electronics Co., Ltd.

Inventor： Mostafa Sayed Roshdy IBRAHIM ,  Ruchen Duan ,  Wook Bong Lee ,  Minki Ahn ,  Hyun Bae Jeon

IPC: H04B1/71 ,  H04B17/345 ,  H04B1/10 ,  H04L25/02 ,  H04L25/03

Abstract: A method and system for providing sub-band whitening are herein provided. According to one embodiment, a method includes deriving an estimated noise plus interference variance (NIVar) based on at least one legacy-long training field (LLTF) symbol from an LLTF signal; and updating an interference whitening (IW) factor by using a sub-band NIVar.

公开(公告)号：US20230062458A1

公开(公告)日：2023-03-02

申请号：US17885187

申请日：2022-08-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Vamadevan NAMBOODIRI ,  Wook Bong LEE ,  Donghan KIM ,  Ruchen DUAN ,  Mostafa Sayed Roshdy IBRAHIM

IPC: H04B1/04

Abstract: An electronic device configured to apply, to a first power amplifier (PA) input, one or more updated memory digital pre-distorter (mDPD) coefficient values is provided. The electronic device includes a processor; and a memory including a non-transitory computer readable storage medium storing instructions that, when executed, cause the processor to preload, from values stored in the memory of the electronic device, one or more mDPD coefficient values; transmit a training signal sequence while using the preloaded one or more mDPD coefficient values; receive the training signal sequence; update the one or more mDPD coefficient values based on the transmitted training signal sequence, the received training signal sequence, and the preloaded one or more mDPD coefficient values; and apply the updated one or more mDPD coefficient values to distort the first PA input.

公开(公告)号：US20210143863A1

公开(公告)日：2021-05-13

申请号：US17153533

申请日：2021-01-20

Applicant: Samsung Electronics Co., Ltd

Inventor： Mostafa Sayed Roshdy IBRAHIM ,  Ruchen DUAN ,  Wook Bong LEE ,  Minki AHN ,  Hyun Bae JEON

IPC: H04B1/71 ,  H04B17/345 ,  H04B1/10 ,  H04L25/02 ,  H04L25/03

Abstract: A method and system for providing sub-band whitening are herein provided. According to one embodiment, a method estimating an interference whitening (IW) factor based on a legacy-long training field (LLTF) signal, updating the estimated IW factor during transmission of a data symbol, and scaling the data symbol based on the updated IW factor and the estimated IW factor.