Continuous phase modulation with chaotic interleaving for visible light communication systems based on orthogonal frequency division multiplexing

Abstract

Visible light communication (VLC) is one of the most promising technologies which offers high data rates and flexible cost‐effective networking solutions for indoor applications. In VLC systems, the optical orthogonal frequency division multiplexing (OFDM) is considered as an efficient technique to avoid VLC channel selectivity. However, OFDM suffers from the high peak‐to‐average‐power‐ratio (PAPR) problem, which degrades the VLC system performance. In this article, we consider the use of a chaotic‐interleaver‐based continuous‐phase‐modulation (CI‐CPM) scheme together with frequency domain equalization (FDE) at the receiver end of the VLC system. A direct current bias is added to the signal to provide real‐valued non‐negative signals for intensity modulation. The proposed scheme outperforms the conventional ones in terms of PAPR. Additionally, it takes the advantages of CPM power efficiency and frequency diversity. Furthermore, three types of FDE techniques are considered and compared including the zero‐forcing (ZF) equalizer, the minimum mean square error equalizer and the regularized ZF equalizer.

Variable pulse position modulation receivers for visible light communication systems without the knowledge of dimming level

“…Hence, it can be decreased the number of classes by using Equation 9as long as it is provided the theoretical framework given in the Appendix. From Figure 3D, it is shown that there are three classes as 30%, 40%, and 50% for n ∈ [3,5].…”

“…During the past two decades, VLC has been applied to provide high‐speed data transmission in numerous areas, such as underwater networks, mobile communication, positioning navigation, and medical communication 1,2 . To meet the demands of the sixth generation (6G) mobile technologies, VLC technology can also be presented as an alternative system to the RF technology since it has low power consumption, high data transmission, and high security 1‐3 . Data rate improvement architectures are crucial for VLC as it must provide fast and reliable data transmission over the shared medium 4 .…”

“…1,2 To meet the demands of the sixth generation (6G) mobile technologies, VLC technology can also be presented as an alternative system to the RF technology since it has low power consumption, high data transmission, and high security. [1][2][3] Data rate improvement architectures are crucial for VLC as it must provide fast and reliable data transmission over the shared medium. 4 To regulate the intensity of projected data traffic, multiple-input-multiple-output (MIMO) technology has emerged as a great potential solution for VLC links.…”

Visible light communication performance using MIMO‐ADO‐OFDM system

“…1,2 Visible light communications (VLC) is becoming an attentive and influential wireless communications technique for high data rates, security, and free-spectrum features. 3,4 Light-emitting diode (LED) modulation bandwidth and propagation path limits of VLC systems cause low-speed transmission. 5 In References 5-7, various strategies were used to overcome these limitations to improve system performance.…”

“…In the world of advanced devices, the Internet of Things (IoT), and end‐to‐end computing, wireless connectivity has become increasingly important 1,2 . Visible light communications (VLC) is becoming an attentive and influential wireless communications technique for high data rates, security, and free‐spectrum features 3,4 . Light‐emitting diode (LED) modulation bandwidth and propagation path limits of VLC systems cause low‐speed transmission 5 .…”