Samsung patents faster signal search with less noise loss
Samsung describes a method for receivers to find and lock onto a specific signal faster by testing multiple possible frequency shifts at once. Instead of checking each frequency separately, the system combines them into a single step, reducing the amount of processing needed while keeping the signal clear.
In the filing’s own words
A method of acquiring a signal in a receiver is provided. The method includes: receiving a signal including a reference code; generating a plurality of frequency hypotheses across a Doppler frequency range associated with the signal; rotating the signal using a composite signal formed by summing time sections of sinusoidal tones corresponding to the plurality of frequency hypotheses; downsampling the rotated signal; applying a respective phase correction to the downsampled signal for each of the plurality of frequency hypotheses to produce a plurality of phase-corrected signals; correlating each phase-corrected signal with the reference code to detect the signal that includes the reference code and generate a plurality of correlation outputs; and selecting a frequency hypothesis of the plurality of frequency hypotheses and a code phase based on a maximum value among the correlation outputs.
What exactly they claim (claim 1)
1. A method of acquiring a signal in a receiver, the method comprising: receiving a signal including a reference code; generating a plurality of frequency hypotheses across a Doppler frequency range associated with the signal; rotating the signal using a composite signal formed by summing time sections of sinusoidal tones corresponding to the plurality of frequency hypotheses; downsampling the rotated signal; applying a respective phase correction to the downsampled signal for each of the plurality of frequency hypotheses to produce a plurality of phase-corrected signals; correlating each phase-corrected signal with the reference code to detect the signal that includes the reference code and generate a plurality of correlation outputs; and selecting a frequency hypothesis of the plurality of frequency hypotheses and a code phase based on a maximum value among the correlation outputs.
Facts
- Company
- Samsung (Samsung Electronics Co., Ltd.)
- Official title
- LOW-COMPLEXITY FAST ACQUISITION TECHNIQUE WITH MINIMAL SNR LOSS
- Publication number
- US20260259331A1
- Application number
- 19354256
- Filed
- Oct 9, 2025
- Published
- Sep 3, 2026
- Inventors
- 1
- Claims
- 20
Classified under
G01S 19/30 Physics & computingG01S 19/29 Physics & computingH04J 13/0062 Electricity & electronicsMore from Samsung in Networks & wireless
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.