Related Experiment Video
Updated: Oct 8, 2025

Automated Deployment of an Internet Protocol Telephony Service on Unmanned Aerial Vehicles Using Network Functions Virtualization
Published on: November 26, 2019
An Improved Backoff Scheme and Its Performance Analysis for Full Duplex MAC Protocols in VLC Networks
Yuta Sawa1, Kosuke Sanada1, Hiroyuki Hatano1
1Department of Electrical and Electronics Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu-shi 514-8507, Japan.
Abstract:
IEEE 802.15.7 Visible Light Communication (VLC) networks suffer from performance degradation caused by the hidden device collisions due to the directional transmission with narrow beamwidth. One of the solutions for mitigating the hidden device collisions is to employ a full-duplex transmission technique. As a side effect of the full-duplex transmission in the VLC networks, however, the data-packet discard due to the retransmission limitation occurs frequently in the networks. This paper proposes an improved backoff scheme and its performance analysis to suppress the packet discard. The proposed backoff scheme increases the Backoff Exponent (BE) and the Number of Backoff stage (NB) in IEEE 802.15.7 only when the data packet transmission fails. To evaluate the system performance theoretically, this paper also provides the Markov-chain model for channel access with the proposed scheme. The performance evaluations through simulation and theoretical analysis show the effectiveness of the proposed scheme.
Related Concept Videos
Buffer Effectiveness
The buffer capacity is the amount of acid or base that can be added to a given volume...
Reducing Line Loss
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
Maximum Power Transfer
By substituting the entire circuit with...
Signal Flow Graphs
In a signal-flow graph, branches denote the system's transfer functions, while nodes represent the signals. The direction of signal flow is indicated by arrows, with the corresponding...
Buffers: Buffer Capacity
In the graph, pH is plotted as a function of the number of moles of base (Cb) added to a weak...
Transmission Line Design Considerations

