A Tight Upper Bound on Channel Capacity for Visible Light Communications

Jiang, Rui; Hanzo, Lajos; Wang, Qi; Dai, Linglong

doi:10.1109/lcomm.2015.2497694

Cited by 56 publications

(32 citation statements)

References 13 publications

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“…In [13], the authors bounded these angles to obtain a capacity upper bound. Other bounds based on a similar approach were derived in [23,24]. Instead of using the Steiner-Minkowski theorem, a different approach for bounding the volume was developed in [14] leading to a tighter bound.…”

Section: (B) Sphere-packing Upper Boundsmentioning

confidence: 99%

Capacity of optical wireless communication channels

Chaaban

Hranilovic

2020

Phil. Trans. R. Soc. A.

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Optical wireless communications are realized by modulating the intensity of a light source and detecting intensity fluctuations at the receiver. This mode of operation, known as intensity modulation and direct detection (IM/DD), is simple to implement in practice. However, computing the channel capacity of the underlying channel is not straightforward because of the amplitude constraints that arise due to IM/DD operation. In particular, the transmit signal must be non-negative, while the peak and average amplitudes are constrained due to practical and safety considerations. Though a closed form for the capacity of IM/DD channels is not known, much work has been done to find capacity bounds and asymptotic capacity expressions. In this paper, a description of the IM/DD channel and its physical constraints is presented, followed by a review of recent progress pertaining to the capacity of IM/DD channels. Additionally, capacity-achieving distributions are discussed along with simple constructions that approach capacity. This article is part of the theme issue ‘Optical wireless communication’.

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Section: (B) Sphere-packing Upper Boundsmentioning

confidence: 99%

Capacity of optical wireless communication channels

Chaaban

Hranilovic

2020

Phil. Trans. R. Soc. A.

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“…[5], a tight upper bound on the capacity is derived in Ref. [6]. By adding a peak optical intensity constraint, tight capacity bounds are further derived in Ref.…”

Section: Optical Fiber and Wireless Communicationsmentioning

confidence: 99%

“…It should be noted that the noises in Refs. [4][5][6][7][8][9][10] are all assumed to be independent with the input signal. This assumption is reasonable if the ambient light is strong or if the receiver suffers from intensive thermal noise.…”

Section: Optical Fiber and Wireless Communicationsmentioning

confidence: 99%

Fundamental Analysis for Visible Light Communication with Input‐Dependent Noise

Wang¹,

Wang²,

Wang³

2017

Optical Fiber and Wireless Communications

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Recently, visible light communication (VLC) has drawn much attention. In literature, the noise in VLC is often assumed to be independent of the input signal. This assumption neglects a fundamental issue of VLC: due to the random nature of photon emission in the lighting source, the strength of the noise depends on the signal itself. Therefore, the input-dependent noise in VLC should be considered. Given this, the fundamental analysis for the VLC with input-dependent noise is presented in this chapter. Based on the information theory, the theoretical expression of the mutual information is derived. However, the expression of the mutual information is not in a closed form. Furthermore, the lower bound of the mutual information is derived in a closed form. Moreover, the theoretical expression of the bit error rate is also derived. Numerical results verify the accuracy of the derived theoretical expressions in this chapter.

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“…In a little more detail, the upper and lower capacity bounds of the modulation and direct detection (IM/DD) aided SISO VLC channel was investigated in [16]- [18]. As an extension, Chaaban et.al.…”

Section: Introductionmentioning

confidence: 99%

Optical Jamming Enhances the Secrecy Performance of the Generalized Space-Shift-Keying-Aided Visible-Light Downlink

Wang

Liu

Wang

et al. 2018

IEEE Trans. Commun.

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Abstract-In order to enhance the secrecy performance of the Generalized Space Shift Keying (GSSK) visible light communication (VLC) system, in this paper, an optical jamming aided secrecy enhancement scheme is proposed, in which the source transmitter (S) simultaneously sends both the confidential desired signal and optical jamming signals under amplitude and power constraints. The optical jamming signals obey the truncated Gaussian distribution for satisfying the constraints. Given the discrete set of channel inputs, the optical jamming aided GSSK-VLC system's secrecy performance is analyzed. Explicitly, the average mutual information (AMI), the lower bound of AMI and its closed-form approximation as well as the achievable secrecy rate are formulated analytically. Furthermore, the optimal power sharing strategy of the proposed GSSK-VLC systems relying on optical jamming is derived. Closed-form expressions are provided for the optimal power sharing in both the low-and high-SNR regions. Finally, extensive simulation results are presented to validate our analytical results.Index Terms-Visible light communication (VLC), generalized space shift keying (GSSK), physical layer security (PLS), optical jamming, achievable secrecy rate, power sharing.

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A Tight Upper Bound on Channel Capacity for Visible Light Communications

Cited by 56 publications

References 13 publications

Capacity of optical wireless communication channels

Capacity of optical wireless communication channels

Fundamental Analysis for Visible Light Communication with Input‐Dependent Noise

Optical Jamming Enhances the Secrecy Performance of the Generalized Space-Shift-Keying-Aided Visible-Light Downlink

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