Presentation Information
[BCS-1-03]Input Current Design for Quantum Cascade Laser-Based Terahertz Wireless Communication Systems
〇Haruma Minami1, kenta Umebayashi1, Ya Zhang1, Hua Li2 (1. Tokyo University of Agriculture and Technology, 2. Chinese Academy of Sciences)
Keywords:
quantum cascade lasers,terahertz wireless communications,input–output characteristic,channel capacity,input current design
This study focuses on a wireless communication system using a Quantum Cascade Laser (QCL), which is expected to be a promising technology for terahertz-band wireless communications. The objective is to improve the channel capacity by optimizing the input current while exploiting the input-output characteristics of the QCL, a nonlinear system.
Specifically, under a fixed power consumption constraint, the bias current, modulation current, and symbol period are designed through an exhaustive search using computer simulations.
In QCL-based wireless communication systems, communication performance is degraded by the effects of noise and inter-symbol interference (ISI). To address this issue, the input current corresponding to the transmitted signal is optimized while taking these impairments into account, thereby improving the channel capacity.
This study demonstrates that the channel capacity can be enhanced by appropriately designing the input-current parameters, namely the bias current, modulation current, and symbol period, while considering the input-output characteristics of the QCL.
Specifically, under a fixed power consumption constraint, the bias current, modulation current, and symbol period are designed through an exhaustive search using computer simulations.
In QCL-based wireless communication systems, communication performance is degraded by the effects of noise and inter-symbol interference (ISI). To address this issue, the input current corresponding to the transmitted signal is optimized while taking these impairments into account, thereby improving the channel capacity.
This study demonstrates that the channel capacity can be enhanced by appropriately designing the input-current parameters, namely the bias current, modulation current, and symbol period, while considering the input-output characteristics of the QCL.