Transmitter and Receiver and Corresponding Methods

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This patent describes an improved method and system for synchronizing transmitters and receivers in digital communication, specifically targeting systems using fragmented data packets (telegram splitting). It features the generation and use of pilot sequences (specific symbol patterns) with properties that ensure any phase errors caused by timing mismatches will largely cancel each other out. This results in more accurate synchronization—particularly phase and frequency estimation—even in challenging conditions like uncoordinated transmissions or low signal-to-noise scenarios, as commonly encountered in IoT and sensor networks.

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• Wireless sensor networks with many distributed sensor nodes communicating asynchronously.
• Telemetry systems such as remote environmental monitoring or utility metering where data packets may be fragmented and sent sporadically.
• Internet of Things (IoT) applications where many devices communicate with a central hub without tight coordination.
• Low-power wide-area network (LPWAN) communications where robustness to interference is critical.
• Industrial automation networks with high collision potential.
• Smart metering and smart grid communications where reliable synchronization is needed despite packet fragmentation.

BenefitsContent extracted from patent full text and abstract with AI.

• Significantly improves robustness of synchronization in fragmented or asynchronous transmission environments.
• Reduces phase errors caused by timing offsets, improving data integrity and lower packet loss rates.
• Enables reliable communication in high-interference and/or low-SNR environments (e.g., crowded IoT deployments).
• Minimizes the impact of uncoordinated senders or packet collisions, making it ideal for dense sensor or telemetry networks.
• Boosts accuracy of time and frequency estimation, which are critical for demodulation and decoding information.
• Adaptable for implementation in software or hardware, enhancing flexibility for various platforms.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

The invention relates to a transmitter (1) which is configured in such a way that it transmits at least one signal having a pilot sequence with multiple pilot symbols, wherein the transmitter (1) has a signal generator (2), wherein the signal generator (2) provides the pilot sequence, wherein the signal generator (2) provides the pilot sequence in such a way that the pilot sequence has at least two symbol groups with a respective at least two pilot symbols, and wherein, with an evaluation of a signal received by a receiver (10) after the transmission of the signal, in relation to a phase of a time offset between a reference time of the transmission of the signal by the transmitter (1) and a value that is assumed and/or estimated for the reference time for the evaluation, the symbol groups generate corresponding phase errors, which, during the evaluation, together substantially offset one another across the symbol groups.