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Inter-Multilevel Super-Orthogonal Space-Time Coding Scheme for Reliable ZigBee-Based IoMT Communications.
Shang-Chih Ma1, Mohammad Alkhaleefah1, Yang-Lang Chang1
1Department of Electrical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan.
Sensors (Basel, Switzerland)
|April 12, 2022
Summary
A new inter-multilevel super-orthogonal space-time coding (IM-SOSTC) scheme improves reliability for Internet of Medical Things (IoMT) communications. This novel approach enhances vital patient data transmission over ZigBee networks, balancing coding gain and spectral efficiency.
Area of Science:
- Electrical Engineering and Computer Science
- Wireless Communication Systems
- Biomedical Engineering
Background:
- The Internet of Medical Things (IoMT) leverages Internet of Things (IoT) technology to transform healthcare delivery.
- ZigBee is a preferred protocol for IoMT due to its low cost, power consumption, and ease of implementation.
- Maintaining high reliability in ZigBee-based IoMT is challenging due to multi-path fading and network interference.
Purpose of the Study:
- To address the demand for reliable vital patient data transmission in ZigBee-based IoMT communications.
- To introduce and evaluate a novel channel coding scheme, inter-multilevel super-orthogonal space-time coding (IM-SOSTC).
- To achieve a superior trade-off between coding gain and spectral efficiency while ensuring full diversity and low complexity.
Main Methods:
- Developed a novel coding scheme, IM-SOSTC, by combining multilevel coding and set partitioning of super-orthogonal space-time block codes.
- Utilized the coding gain distance (CGD) criterion for scheme design.
- Conducted computer simulations over a quasi-static Rayleigh fading channel to compare IM-SOSTC with existing schemes.
Main Results:
- The proposed IM-SOSTC scheme demonstrates superior performance compared to other related coding schemes.
- IM-SOSTC effectively provides inter-level dependency between adjacent multilevel coded blocks, enhancing spectral efficiency.
- The scheme guarantees full diversity and maintains low complexity.
Conclusions:
- IM-SOSTC offers an optimal solution for enhancing the reliability and efficiency of ZigBee-based IoMT communications.
- The novel coding scheme effectively addresses the challenges of fading and interference in wireless IoMT environments.
- This advancement supports more dependable transmission of critical patient data, improving IoMT healthcare applications.
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