DEMODULATION OF MODULATED SIGNALS

DE602021053746T2Active Publication Date: 2026-05-06NORDIC SEMICONDUCTOR
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Patents
Current Assignee / Owner
NORDIC SEMICONDUCTOR
Filing Date
2021-06-16
Publication Date
2026-05-06

AI Technical Summary

Technical Problem

Existing demodulation methods suffer from inaccuracies due to frequency mismatch and incorrect modulation index estimation, particularly in systems like Bluetooth and Bluetooth Low Energy, leading to reduced sensitivity and phase errors in receivers.

Method used

A method and apparatus for jointly estimating frequency-offset and modulation-index using an optimization process that minimizes a cost function, allowing for accurate demodulation by determining these parameters simultaneously.

Benefits of technology

Improves demodulation accuracy by accounting for deviations in modulation index and frequency offset, enabling receivers to handle a wider frequency tuning range and maintain sensitivity, even with varying modulation types.

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