Multi-Stage Channel Identification Coding for Noisy IoT Networks
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Solution Overview
Problem
Existing wireless communication systems face challenges in reliably identifying a large number of devices over noisy channels, particularly in IoT networks, where traditional methods struggle to maintain identification accuracy.
Innovation Solution
A method utilizing a combination of outer codes, optical orthogonal codes, and error correction codes to encode identifiers, ensuring reliable identification over noisy channels by selecting a unique codeword for each device, which is then transmitted and decoded using error correction techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If traditional identification methods are used over noisy communication channels, then the system is simpler to implement, but the number of identifiable devices is limited and identification reliability decreases
Solution Approach 1:
The identification system segments the identification process into multiple independent coding stages: outer code encoding, optical orthogonal code encoding, and error correction code encoding. Each stage processes specific aspects of the identifier, allowing the system to handle larger numbers of devices while maintaining reliability through specialized functions at each segmentation level
Solution Approach 2:
The patent applies composite coding by combining three distinct code types (outer code, optical orthogonal code, and error correction code) into a unified identification system. This composite approach leverages the strengths of each code type to simultaneously increase the number of identifiable devices and maintain identification reliability over noisy channels
2Quantity of substance
If more devices are identified over noisy channels, then the system capacity increases, but the probability of identification error increases
Solution Approach 1:
The system applies error correction code encoding in advance before transmission over noisy channels. This beforehand cushioning prepares the identifier data with error correction capabilities, creating a buffer against noise-induced errors that allows more devices to be identified while maintaining acceptable error probabilities
Solution Approach 2:
The multi-stage encoding process provides implicit feedback mechanisms where each coding stage validates and refines the identifier representation. The outer code, optical orthogonal code, and error correction code work in sequence to detect and correct deviations, effectively reducing identification errors as more devices are added to the system
3Quantity of substance
If a single code type is used for identification, then the system is easier to implement, but the number of identifiable devices is constrained
Solution Approach 1:
The identification system segments the coding function into three specialized components: outer code for basic identifier representation, optical orthogonal code for enhanced discrimination, and error correction code for reliability. This segmentation allows the system to identify more devices while managing complexity through modular, specialized functions at each stage
Data Source
AI summary
The disclosure relates to a method for identification via channels in a system having a plurality of data processing devices. The method comprises selecting, in a first data processing device, an identifier indicative of a target second data processing device of a plurality of second data processing devices; determining, in the first data processing device, 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, an optical orthogonal codeword from the outer codeword using an optical orthogonal code; determining, in the first data processing device; a randomly selected codeword from the optical orthogonal codeword using an error correction code; and emitting the selected codeword from the first data processing device via a channel. Further, a computer program product and a system for identification via channels are provided.