Visible light communications (VLC) has emerged as a viable supplement for high speed next-generation communication systems. However, performance of a VLC link is limited by the nonlinear characteristics of light emitting diodes (LEDs), ambient light, and inter-symbol interference (ISI). In this letter, the paradigm of least-squares based post-distortion over reproducing kernel Hilbert spaces (RKHS) is considered for a visible light communication (VLC) link. The performance-limiting impairments (viz. LED nonlinearity, and ISI), are mitigated by random Fourier features (RFF) based least minimum symbol error-rate post-distorter in RKHS, which facilitates post-distortion under finite memory-budget constrained scenarios. Performance of the proposed algorithm is tested over IEEE 802.15r1 PAN VLC channels, and the proposed algorithm is observed to converge significantly faster, whilst supporting higher data rates as compared to the existing RKHS based post-distorters.

中文翻译：

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使用随机傅立叶特征的 VLC 基于最小符号错误率的后失真

可见光通信 (VLC) 已成为下一代高速通信系统的可行补充。然而，VLC 链路的性能受到发光二极管 (LED)、环境光和符号间干扰 (ISI) 的非线性特性的限制。在这封信中，在可见光通信 (VLC) 链路中考虑了基于最小二乘法的后失真在再现内核希尔伯特空间 (RKHS) 上的范例。RKHS 中基于随机傅立叶特征 (RFF) 的最小符号错误率后失真器减轻了性能限制损伤（即 LED 非线性和 ISI），这有助于在有限内存预算受限情况下进行后失真。在 IEEE 802.15r1 PAN VLC 信道上测试了所提出算法的性能，