Invention Grant
- Patent Title: Circuits and methods for frequency offset estimation in FSK communications
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Application No.: US15656039Application Date: 2017-07-21
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Publication No.: US09853844B2Publication Date: 2017-12-26
- Inventor: Wenxun Qiu , Timothy Mark Schmidl
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Kenneth Liu; Charles A. Brill; Frank D. Cimino
- Main IPC: H03D3/00
- IPC: H03D3/00 ; H04L27/16 ; H04L27/14

Abstract:
Disclosed embodiments include a receiver having an input that receives a frequency shift key (FSK) signal having a preamble comprising preamble symbols, a phase compensator that applies a compensation vector to one of first and second samples of a first preamble symbol, wherein applying the compensation vector to the one of the first and second samples produces a compensated sample, a demodulator that determines a phase offset between the compensated sample and the other one of the first and second samples of the first preamble symbol, and a frequency offset mapper that determines a frequency offset based at least upon the phase offset. The receiver applies the frequency offset to the FSK signal.
Public/Granted literature
- US20170324595A1 CIRCUITS AND METHODS FOR FREQUENCY OFFSET ESTIMATION IN FSK COMMUNICATIONS Public/Granted day:2017-11-09
Information query
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