Wake-up receiver and wake-up signal transmission
Patent Information
- Application Number
- DE602018088991
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2018-12-13
- Publication Date
- 2026-02-04
- Estimated Expiration
- 2038-12-13
AI Technical Summary
Wakeup receivers in low-power wireless devices are vulnerable to interference due to limited filtering and non-linear amplitude detection, leading to reduced signal-to-noise ratio and unreliable operation, especially when using a free-running local oscillator.
Implement a low-power, narrowband, homodyne wakeup receiver with a free-running local oscillator and utilize network-transmitted wakeup signals for oscillator frequency calibration, employing amplitude modulation and multiple carriers with frequency hopping to enhance immunity to interference.
The solution achieves high selectivity and sensitivity while maintaining low power consumption by regularly calibrating the local oscillator, improving signal detection accuracy and reducing interference impact.