公开(公告)号：US20250055745A1

公开(公告)日：2025-02-13

申请号：US18920576

申请日：2024-10-18

Applicant: Cisco Technology, Inc.

Inventor： Ardalan Alizadeh ,  Sivadeep Reddy Kalavakuru ,  Matthew Aaron Silverman ,  Mohsen Jamalabdollahi ,  Fred Jay Anderson

IPC: H04L27/26 ,  H04B1/04

Abstract: Crest Factor Reduction (CFR) parameters are determined for a dual band Power Amplifier (PA). A first band of the dual band PA is associated with a first Multi-Link Operation (MLO) link and a second band of the dual band PA is associated with a second MLO link. Determining the CFR parameters comprises determining based on a configuration of the first MLO link and the second MLO link. A first portion of the CFR parameters is provided to a first crest factor reduction block. First portion of the CFR parameters comprises a first clipping threshold associated with the first band and first filter coefficients associated with the first band. A second portion of the CFR parameters is provided to a second crest factor reduction block. The second portion of the CFR parameters comprises a second clipping threshold associated with the second band and second filter coefficients associated with the second band.

公开(公告)号：US20240072955A1

公开(公告)日：2024-02-29

申请号：US17820404

申请日：2022-08-17

Applicant: Cisco Technology, Inc.

Inventor： Mohsen Jamalabdollahi ,  Ardalan Alizadeh ,  Audrey Yazdanparast ,  Matthew Aaron Silverman

IPC: H04L5/00 ,  H04W56/00

CPC classification number: H04L5/0044 ,  H04L5/0053 ,  H04L5/0007 ,  H04W56/001

Abstract: Legacy preamble puncturing for fine timing and frequency offset estimation may be provided. Within a user information field of a trigger frame, a legacy preamble puncturing pattern may be allocated to each of a plurality of client devices wherein each of the plurality of client devices is allocated with at least one respective corresponding non-overlapping sub-channel. Next, from each of the plurality of client devices on their respective corresponding non-overlapping sub-channel, a respective corresponding preamble may be received. Time and frequency synchronization may then be performed for each of the plurality of client devices based on their respective corresponding preamble.

公开(公告)号：US12126480B2

公开(公告)日：2024-10-22

申请号：US18171702

申请日：2023-02-21

Applicant: Cisco Technology, Inc.

Inventor： Ardalan Alizadeh ,  Sivadeep Reddy Kalavakuru ,  Matthew Aaron Silverman ,  Mohsen Jamalabdollahi ,  Fred Jay Anderson

IPC: H04L27/26 ,  H04B1/04

CPC classification number: H04L27/2623 ,  H04B1/0475 ,  H04B2001/0408

Abstract: Crest Factor Reduction (CFR) parameters are determined for a dual band Power Amplifier (PA). A first band of the dual band PA is associated with a first Multi-Link Operation (MLO) link and a second band of the dual band PA is associated with a second MLO link. Determining the CFR parameters comprises determining based on a configuration of the first MLO link and the second MLO link. A first portion of the CFR parameters is provided to a first crest factor reduction block. First portion of the CFR parameters comprises a first clipping threshold associated with the first band and first filter coefficients associated with the first band. A second portion of the CFR parameters is provided to a second crest factor reduction block. The second portion of the CFR parameters comprises a second clipping threshold associated with the second band and second filter coefficients associated with the second band.

公开(公告)号：US20240283688A1

公开(公告)日：2024-08-22

申请号：US18171702

申请日：2023-02-21

Applicant: Cisco Technology, Inc.

Inventor： Ardalan Alizadeh ,  Sivadeep Reddy Kalavakuru ,  Matthew Aaron Silverman ,  Mohsen Jamalabdollahi ,  Fred Jay Anderson

IPC: H04L27/26 ,  H04B1/04

CPC classification number: H04L27/2623 ,  H04B1/0475 ,  H04B2001/0408

Abstract: Crest Factor Reduction (CFR) parameters are determined for a dual band Power Amplifier (PA). A first band of the dual band PA is associated with a first Multi-Link Operation (MLO) link and a second band of the dual band PA is associated with a second MLO link. Determining the CFR parameters comprises determining based on a configuration of the first MLO link and the second MLO link. A first portion of the CFR parameters is provided to a first crest factor reduction block. First portion of the CFR parameters comprises a first clipping threshold associated with the first band and first filter coefficients associated with the first band. A second portion of the CFR parameters is provided to a second crest factor reduction block. The second portion of the CFR parameters comprises a second clipping threshold associated with the second band and second filter coefficients associated with the second band.