Low complexity least minimum symbol error rate based post-distortion for vehicular VLC
Yükleniyor...
Dosyalar
Tarih
2020-10-22
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Institute of Electrical and Electronics Engineers Inc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Vehicular visible light communications (VLC) has emerged as a viable supplement for high speed next-generation vehicle to vehicle (V2V) communication systems. However, performance of a V2V-VLC link is impaired due to nonlinear transfer-characteristics of light emitting diodes (LEDs), and inter-symbol interference (ISI). In this article, a low-complexity least-squares based post-distortion algorithm is formulated over reproducing kernel Hilbert space (RKHS) for a multi-hop V2V-VLC link. The impairments encountered in V2V-VLC channels are mitigated in RKHS by a minimum symbol error-rate post-distorter using a low dimensional approximation of random Fourier features (RFF) (which is a soft approximation of the feature-map to RKHS), that facilitates computationally simple post-distortion under finite memory-budget. The convergence and the BER-performance of the proposed post-distorter is analyzed over realistic V2V VLC channels obtained via ray-tracing. From the analysis, and the presented computer-simulations, the proposed post-distorter is found to exhibit equivalent convergence characteristics and error-rate over reasonable distances, with much lower computational complexity.
Açıklama
Anahtar Kelimeler
Visible light communication, Optical wireless, Orthogonal frequency division multiplexing (OFDM), Autoencoders, RFF, RKHS, V2V, VLC, Budget control, Errors, Light, Vehicle to vehicle communications, Convergence characteristics, Fourier features, Low-dimensional approximation, Minimum symbol error rates, Nonlinear transfer, Post-distortion, Reproducing Kernel Hilbert spaces, Visible light communications (VLC), Light emitting diodes, Convergence, Kernel, Complexity theory, Approximation algorithms, Indexes, Receivers
Kaynak
IEEE Transactions on Vehicular Technology
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
10
Sayı
69
Künye
Mitra, R., Miramirkhani, F., Bhatia, V. & Uysal, M. (2020). Low complexity least minimum symbol error rate based post-distortion for vehicular VLC. IEEE Transactions on Vehicular Technology, 69(10), 11800-11810. doi:10.1109/TVT.2020.3018740
