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Encoding

Encoding

Information enters the brain through encoding, which is the input of information into the memory system. Once sensory information is received from the environment, the brain labels or codes it. The information is then organized with similar information and connected to existing concepts. Encoding occurs through automatic processing and effortful processing.
Automatic processing involves the encoding of details like time, space, frequency, and the meaning of words, usually done without conscious...

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Image information transmission based on self-rotating beam arrays encoding/decoding.

Wenxing Yang, Shengxiang Shan, Mengsi Liu

|August 13, 2025

Summary

This summary is machine-generated.

This study introduces a novel indoor information transmission system using self-rotating beams (SRBs) to encode and decode data. The system achieved zero bit error rate, demonstrating feasible free-space optical communication.

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Area of Science:

Optics and Photonics
Information and Communication Technology

Background:

Self-rotating beams (SRBs) are generated by modulating metalens phase.
Optical communication systems require efficient data encoding and decoding methods.

Purpose of the Study:

To propose and demonstrate an indoor information transmission system utilizing modified SRB arrays.
To evaluate the performance of this system for data encoding and decoding.

Main Methods:

Encoding/decoding data sequences containing spatial position and state information of SRB arrays.
Utilizing a spatial light modulator as an encoder for a 256x256-pixel grayscale image.
Measuring the bit error rate (BER) of the decoded images.

Main Results:

Successful encoding and decoding of a 256x256-pixel grayscale image using SRB arrays.
Achieved a bit error rate (BER) of zero for the recovered images.
Demonstrated the feasibility of the SRB-based system.

Conclusions:

The proposed indoor information transmission system based on modified SRB arrays is feasible.
The system exhibits acceptable performance for free-space optical communication.