Resource allocation and BER performance analysis in OFDMA VLC systems
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View abstract on PubMed
Summary
This summary is machine-generated.This study proposes a joint power and subcarrier allocation scheme for visible light communication (VLC) in wireless body area networks (WBANs) to minimize symbol error rates. Incorporating wall-mounted mirrors enhances reliable communication, even with patient movement and obstructions.
Area Of Science
- Wireless communication systems
- Biomedical engineering
- Optical networking
Background
- Wireless body area networks (WBANs) are crucial for remote patient monitoring.
- Visible light communication (VLC) offers an efficient solution for medical WBANs, particularly for external links.
- Minimizing symbol error rates (SERs) is critical for reliable medical data transmission.
Purpose Of The Study
- To propose a joint power and subcarrier allocation scheme for VLC systems in medical WBANs.
- To minimize SERs under transmit power limitations and user rate requirements.
- To evaluate the impact of channel conditions and novel communication strategies on system performance.
Main Methods
- Developed a joint power and subcarrier allocation scheme for VLC systems.
- Utilized an improved channel model incorporating received signal power dependent noise (RSN).
- Assessed the influence of receiver tilting and wall-mounted mirrors (for LoS and NLoS) on resource allocation.
Main Results
- RSN and receiver tilting significantly impact resource allocation strategies.
- The proposed scheme effectively minimizes SERs in medical WBANs.
- Utilizing NLoS links with wall-mounted mirrors can reduce outage probability to near zero.
Conclusions
- The proposed resource allocation scheme enhances the reliability of VLC-based medical WBANs.
- Wall-mounted mirrors are a viable solution for maintaining communication robustness against movement and obstructions.
- VLC technology, with strategic resource management, shows great promise for future healthcare applications.
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