Experimental Study and Application of Response Mask Invariant Characteristic for Generalized Visible Light Communication Channel

Wu, Fangzhou; Chen, Li; Cai, Shuzhen; Wang, Weidong

doi:10.1109/jphot.2018.2834384

Cited by 8 publications

(9 citation statements)

References 26 publications

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“…Figure 4 presents the autocorrelation function characteristics of the 16-bit public key for the various combinations of the prime numbers (p, q) in Table 1. (11,127), (11,1231), and (11,12,343).…”

Section: Rsa Encryption Keymentioning

confidence: 99%

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Secure Visible Light Communication Technique Based on Asymmetric Data Encryption for 6G Communication Service

Lee

2020

Electronics

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Security in residential and business establishments has become an area of considerable importance. To provide enhanced security using conventional visible light (VL) communication, the characteristics of which allow for easy access by nearby intruders, a new VL communication technique is proposed in this paper. The novel VL communication system is based on a data encryption method using asymmetric encryption, and it is proposed for use in smart indoor services in the 6th generation communication environment. The asymmetric encryption capability is studied by comparison with the conventional technique, the optimum key length for the public or private encryption codes is determined under the criterion of the minimum estimation error. Moreover, the error performance is analyzed with various RSA encryption keys and data lengths to verify the performance of the proposed technique. A real experiment is performed to evaluate the proposed technique using an implemented test bed, and the success rates of the VL communication technique with and without RSA coding are evaluated by a real experiment with a test bed under an indoor laboratory VL channel. We believe it is evident that the VL communication technique based on asymmetric encryption yields superior error performance compared to that without encryption for optimal lengths of the encryption key and data bits.

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Section: Rsa Encryption Keymentioning

confidence: 99%

“…Numerous studies [6][7][8][9][10][11][12][13] and standardization work [14] have been carried out on VL communication services. In particular, secure VL communication services based on encryption algorithms to enhance security performance have been studied, some examples of which are summarized here.…”

Section: Introductionmentioning

confidence: 99%

Secure Visible Light Communication Technique Based on Asymmetric Data Encryption for 6G Communication Service

Lee

2020

Electronics

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“…Here, A + B is an additional background intensity that will be removed by using (5). Thus, the intensity functions of the first, second, and third frames are r 2 , r 1 , and r 3 , respectively.…”

Section: ) the Frame Intensity Functionmentioning

confidence: 99%

“…Most of the works in VLC development are based on photodiode receivers such as [3]- [5] due to its high communication speed. On the other hand, cameras or image sensors, bundled with mobile devices, can easily be transformed into communication receivers.…”

Section: Introductionmentioning

confidence: 99%

Square Wave Quadrature Amplitude Modulation for Visible Light Communication Using Image Sensor

et al. 2019

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Most visible light communication (VLC) technologies use a light emitting diode (LED) as a data transmitter and a photodiode as a receiver. In this paper, we alternatively focus on the use of an image sensor or camera as a receiver due to its wide availability. However, the successful use of an image sensor mainly depends on the efficiency of the encoder-decoder and the modulation scheme. Thus, this paper proposes a novel modulation scheme based on a square wave signal called a square wave quadrature amplitude modulation (SW-QAM) method. This method can accommodate different camera settings and overcome the problem of LED flicker that is generally sensed by human eyes when the LED frequency is low. At the transmitter side, multiple LEDs can be used to increase the transmission bit rate, while, at the receiver side, a Wiener filter is used as a complementary technique to SW-QAM for solving the light interference phenomenon due to the closeness of one LED to another. Our experimental results show that the proposed SW-QAM scheme can decode symbols very well either the for close or far communication distances, dark or bright lighting conditions, and single or multiple LED points. INDEX TERMS Visible light communication (VLC), image sensor communication (ISC), exposure time, square wave quadrature amplitude modulation (SW-QAM).

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“…where z l [n] is the noise sample at the output of the l-th matched filter ω l (2T s −t); z l [n] (∀n ∈ N ) are assumed to be an independent and identically distributed (i.i.d) AWGN RVs with zero mean and variance σ 2 l , whereσ 2 l = E[s 2 l [n]]σ 2[37]. Equation(8), which is based on(5), indicates that z 2 [n] is discarded if a positive signal is detected; otherwise z[n] is equal to the sum of the two noise components z 1 [n] and z 2 [n] divided by √ 2. Thus, it is intuitively clear from (8) that in our proposed scheme the noise power of z[n] will be less than that of z(t); i.e., σ 2 .…”

mentioning

confidence: 99%

A Novel Unipolar Transmission Scheme for Visible Light Communication

Dawoud

Héliot

Imran

et al. 2020

IEEE Trans. Commun.

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This paper proposes a novel unipolar transceiver for visible light communication (VLC) by using orthogonal waveforms. The main advantage of our proposed scheme over most of the existing unipolar schemes in the literature is that the polarity of the real-valued orthogonal frequency division multiplexing (OFDM) sample determines the pulse shape of the continuous-time signal and thus, the unipolar conversion is performed directly in the analog instead of the digital domain. Therefore, our proposed scheme does not require any direct current (DC) biasing or clipping as it is the case with existing schemes in the literature. The bit error rate (BER) performance of our proposed scheme is analytically derived and its accuracy is verified by using Matlab simulations. Simulation results also substantiate the potential performance gains of our proposed scheme against the state-of-the-art OFDM-based systems in VLC; it indicates that the absence of DC shift and clipping in our scheme supports more reliable communication and outperforms the asymmetrically clipped optical-OFDM (ACO-OFDM), DC optical-OFDM (DCO-OFDM) and unipolar-OFDM (U-OFDM) schemes. For instance, our scheme outperforms ACO-OFDM by at least 3 dB (in terms of signal to noise ratio) at a target BER of 10 −4 , when considering the same spectral efficiency for both schemes.

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Experimental Study and Application of Response Mask Invariant Characteristic for Generalized Visible Light Communication Channel

Cited by 8 publications

References 26 publications

Secure Visible Light Communication Technique Based on Asymmetric Data Encryption for 6G Communication Service

Secure Visible Light Communication Technique Based on Asymmetric Data Encryption for 6G Communication Service

Square Wave Quadrature Amplitude Modulation for Visible Light Communication Using Image Sensor

A Novel Unipolar Transmission Scheme for Visible Light Communication

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