Method and System for Identification via Channels Using Optical Orthogonal Codes

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention describes a method and system for reliably identifying devices across communication channels, especially noisy ones. It uses a combination of advanced coding techniques, including outer codes, optical orthogonal codes, and error correction codes, to encode a unique identifier for each device. The system can select a target device by encoding and transmitting a specific codeword, which the target device can recognize—even in the presence of channel noise. The approach dramatically increases the number of devices that can be uniquely identified with high reliability, and it is compatible with traditional and wireless communication setups.

Use CasesContent extracted from patent full text and abstract with AI.

• Massive device identification in Internet-of-Things (IoT) networks such as smart homes, industrial automation systems, or sensor networks.
• Secure and robust digital watermarking for copyright protection of images, audio, and video files.
• Molecular identification in molecular communication networks, such as in bioengineering or synthetic biology applications.
• Device authentication in wireless communications, e.g., for access control or handshaking in mobile networks.
• Network node discovery and authentication in large distributed computing environments.
• Broadcast or multicast communications where only specific recipients should recognize and respond to messages.

BenefitsContent extracted from patent full text and abstract with AI.

• Greatly increases the number of unique identifiers that can be reliably communicated, allowing scalability to millions of devices.
• Provides robust identification even over noisy channels, improving reliability in real-world environments.
• Compatible with standard communication hardware and protocols, enabling easy integration and retrofitting.
• Supports strong security features such as randomization and resistance to eavesdropping or spoofing attacks.
• Suitable for a wide range of applications, from digital watermarking to molecular communications.
• Reduces error probability in device identification compared to classic methods like pulse position modulation (PPM).

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Inventors & Applicants

Patent Abstract

The disclosure relates to a method for identification via channels in a system having a plurality of data processing devices (10, 12, 13, 14). The method comprises selecting, in a first data processing device (10), an identifier indicative of a target second data processing device (12) of a plurality of second data processing devices (12, 13, 14); determining, in the first data processing device (10), an outer codeword from the identifier using an outer code comprising a first outer code and a second outer code; determining, in the first data processing device (10), an optical orthogonal codeword of weight W from the outer codeword using an optical orthogonal code; determining, in the first data processing device (10), a randomly selected codeword from a set of W code words of an error correction code assigned to the optical orthogonal codeword; and emitting the selected codeword from the first data processing device (10) via a channel. Further, a computer program product and a system for identification via channels are provided.