1. The Improved Precoding Method in the VLC-Based Intelligent Transportation System.
- Author
-
li, Shilin, Cheng, Y., Zhou, T.Y., and Liang, P.Y.
- Subjects
INTELLIGENT transportation systems ,OPTICAL communications ,VISIBLE spectra ,SIGNAL-to-noise ratio ,FORWARD error correction - Abstract
Visible light communication (VLC) transmission system, combined with lighting and communication, has a great application value in the field of intelligent transportation. To efficiently improve the performance of VLC-based intelligent transportation system, an improved precoding scheme is proposed and experimentally verified. Partial data-carrying subcarrier (PDS)-precoding scheme can balance the signal-to-noise ratio (SNR) and combat frequency selective fading (FSF) in the VLC-based intelligent transportation system. For ∼3.52 Gb/s DMT-VLC system with 1.9-m free space transmission, the OCT-based PDS-precoding signal shows almost the same BER performance as full data-carrying subcarriers precoding ones. Compared with the conventional scheme, the BER is reduced from 2e-3 to 8.14e-5 by using the proposed PDS-precoding. PDS-precoding is a nice choice to degrade the unbalanced damage for data-carrying subcarriers (SCs) in the bandwidth-limited VLC-based intelligent transportation system. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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