Invention Grant
- Patent Title: One-shot wideband delay measurement with sub-sample accuracy for parallel receivers and/or generators, and alignment procedure
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Application No.: US15918083Application Date: 2018-03-12
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Publication No.: US10917144B2Publication Date: 2021-02-09
- Inventor: Tanim Mohammed Abu Taher , Edward Rodriguez
- Applicant: NATIONAL INSTRUMENTS CORPORATION
- Applicant Address: US TX Austin
- Assignee: NATIONAL INSTRUMENTS CORPORATION
- Current Assignee: NATIONAL INSTRUMENTS CORPORATION
- Current Assignee Address: US TX Austin
- Agency: Kowert Hood Munyon Rankin and Goetzel PC
- Agent Jeffrey C. Hood; Luke S. Langsjoen
- Main IPC: H04B7/0413
- IPC: H04B7/0413 ; H04L5/00 ; H04L27/26 ; H04J13/00

Abstract:
Systems and methods are described for using a single wideband pilot signal to reduce a timing misalignment between receivers in a multiple-input multiple-output (MIMO) radio system. The multiple generators of the MIMO radio system may be aligned using a second wideband pilot signal subsequent to performing the receiver alignment. The calibration kit of the MIMO radio system may be aligned using a third wideband pilot signal prior to performing the receiver alignment. Alignment may be achieved to subsample precision by determining time delays from the rate of change of the phase shift of the wideband pilot signals.
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