An Optimal Power Allocation for Multi-LED Phase-Shifted-Based MISO VLC Systems

作者：Wang Wen Ya^*; Zhu Yi Jun; Zhang Yan Yu; Zhang Jian Kang

来源：IEEE Photonics Technology Letters, 2015, 27(22): 2391-2394.

DOI：10.1109/LPT.2015.2466573

• Visible light communication (VLC)
• multi-LED phase-shifted PAM (MP-PAM)
• multi-input single-output (MISO)
• maximum likelihood (ML) detection
• power allocation

Multi-LED phase-shifted superposition transmission technique has been proposed as a means to increase the rate of visible light communication (VLC) system. We present an optimal power allocation scheme for multi-LED phase-shifted pulse amplitude modulation (PAM) based multi-input single-output indoor VLC systems. An optimal design criterion with the maximum likelihood detection is described, and meanwhile, a closed-form allocation solution is developed with non-vanishing minimum Euclidean distances as the constellation size increases. The simulation results indicate that the proposed power allocation strategy obtains significant performance gains over the uniform power allocation

• 出版日期2015-11-15
• 单位中国科学技术信息研究所