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arXiv 2112.04410cs.ITeess.SPmath.IT
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基于NOMA的可见光通信系统的简单公平功率分配

Simple Fair Power Allocation for NOMA-Based Visible Light Communication Systems

Carlos Alberto Rodríguez López, Vitalio Alfonso Reguera

摘要:

功率域非正交多址接入(NOMA)技术被认为是克服现有可见光通信(VLC)系统带宽限制的一种很有前途的技术。在这封信中,我们研究了NOMA-VLC系统在高信噪比(SNR)条件下的功率分配(PA)问题。提出了一种简单的公平功率分配策略(SFPA),以确保在多用户场景中传输资源的公平分配。SFPA需要最少的信道状态信息(CSI),使得它不太容易出现信道估计错误。结果表明,NOMA与SFPA提供了更公平和更高的可实现的每用户的速率(高达79.5%以上的研究设置),而不会显着损害整体系统性能。

英文摘要:

Non-orthogonal multiple access (NOMA) in the power-domain has been recognized as a promising technique to overcome the bandwidth limitations of current visible light communication (VLC) systems. In this letter, we investigate the power allocation (PA) problem in an NOMA-VLC system under high signal-to-noise-ratio (SNR) regime. A simple fair power allocation strategy (SFPA) is proposed to ensure equitable allocation of transmission resources in a multi-user scenario. SFPA requires minimal channel state information (CSI), making it less prone to channel estimation errors. Results show that NOMA with SFPA provides fairer and higher achievable rates per user (up to 79.5\% higher in the studied setup), without significantly compromising the overall system performance.

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