Invention Grant
- Patent Title: System, apparatus and method for acquisition of signals in wireless systems with adverse oscillator variations
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Application No.: US17472935Application Date: 2021-09-13
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Publication No.: US11632733B2Publication Date: 2023-04-18
- Inventor: Sriram Mudulodu , Manoj Kumar Medam
- Applicant: Silicon Laboratories Inc.
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories Inc.
- Current Assignee: Silicon Laboratories Inc.
- Current Assignee Address: US TX Austin
- Agency: Zagorin Cave LLP
- Main IPC: H04L27/28
- IPC: H04L27/28 ; H04W56/00

Abstract:
In one aspect, a radio device comprises: an analog front end (AFE) circuit to receive and process an incoming radio frequency (RF) signal comprising a packet; an analog-to-digital converter (ADC) coupled to the AFE circuit to receive and digitize the processed incoming RF signal into a digital signal; a detector coupled to the ADC to detect a carrier frequency offset (CFO) in the digital signal based at least in part on a preamble of the packet; and a controller coupled to the detector. The controller may generate a compensation value for the CFO based on the detected CFO and cause one or more components of the radio device to compensate for the CFO using the compensation value.
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