Performance Analysis of DC-SSK Scheme and Its Power Allocation in VLC System

Qi, Zeming; Bai, Zhiquan; Zhang, Na; Sun, Siao; Kwak, Kyung Sup

doi:10.1109/iccnc.2018.8390408

Cited by 6 publications

(3 citation statements)

References 12 publications

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“…In this context, various reported contributions investigated the performance capability of GSSK in VLC systems. For instance, [24] derived a closed form expression for the average symbol error rate (ASER) for direct-code GSSK system and showed that with a low complexity power allocation mechanism, the ASER and spectral efficiency can be improved significantly. Moreover, the authors in [25] investigated the physical layer security of a GSSK-VLC system and proposed an optimal LED pattern selection algorithm to enhance the achievable secrecy performance.…”

Section: Introductionmentioning

confidence: 99%

Space-Time Block Coded Spatial Modulation for Indoor Visible Light Communications

et al. 2022

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Visible light communication (VLC) has been recognized as a promising technology for handling the continuously increasing quality of service and connectivity requirements in modern wireless communications, particularly in indoor scenarios. In this context, the present work considers the integration of two distinct modulation schemes, namely spatial modulation (SM) with space time block codes (STBCs), aiming at improving the overall VLC system reliability. Based on this and in order to further enhance the achievable transmission data rate, we integrate quasi-orthogonal STBC (QOSTBC) with SM, since relaxing the orthogonality condition of OSTBC ultimately provides a higher coding rate. Then, we generalize the developed results to any number of active light-emitting diodes (LEDs) and any M -ary pulse amplitude modulation size. Furthermore, we derive a tight and tractable upper bound for the corresponding bit error rate (BER) by considering a simple two-step decoding procedure to detect the indices of the transmitting LEDs and then decode the signal domain symbols. Notably, the obtained results demonstrate that QOSTBC with SM enhances the achievable BER compared to SM with repetition coding (RC-SM). Finally, we compare STBC-SM with both multiple active SM (MASM) and RC-SM in terms of the achievable BER and overall data rate, which further justifies the usefulness of the proposed scheme.

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Section: Introductionmentioning

confidence: 99%

Space-Time Block Coded Spatial Modulation for Indoor Visible Light Communications

et al. 2022

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“…Furthermore, the advantages and disadvantages of GSSK technology in indoor VLC system have been thoroughly analyzed, the authors of [16] pointed out that GSSK is suitable for the situation where the receiver position is fixed, because the mobility of the receiver greatly affects its performance. In order to enhance the error performance of the traditional GSSK-VLC system, a low-complexity power allocation scheme was proposed in the direct-coded GSSK system, which improved the symbol error rate while increasing the transmission rate [17]. For the indoor VLC system based on GSSK, the physical layer security problem was considered in [18], [19], the security performance of the system was analyzed, and the methods of security improvement based on LEDs selection and artificial noise injecting were also proposed.…”

Section: Introductionmentioning

confidence: 99%

Sparsity Signal Detection for Indoor GSSK-VLC System

Zuo

Wang

Zhang

2021

IEEE Trans. Veh. Technol.

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In this paper, the signal detection problem in indoor visible light communication (VLC) system aided by generalized space shift keying (GSSK) is modeled as a sparse signal reconstruction problem, which has lower computational complexity by exploiting the sparse reconstruction algorithms in compressed sensing (CS). In order to satisfy the measurement matrix property to perform sparse signal reconstruction, a preprocessing approach of measurement matrix is proposed based on singular value decomposition (SVD), which theoretically guarantees the feasibility of utilizing CS based sparse signal detection method in indoor GSSK-VLC system. Then, by adopting classical orthogonal matching pursuit (OMP) algorithm and compressed sampling matching pursuit (CoSaMP) algorithm, the GSSK signals are efficiently detected in the considered indoor GSSK-VLC system. Furthermore, a more efficient detection algorithm combined with OMP and maximum likelihood (ML) is also presented especially for SSK scenario. Finally, the effectiveness of the proposed sparsity aided detection algorithms in indoor GSSK-VLC system are verified by computer simulations. The results show that the proposed algorithms can achieve better bit error rate (BER) and lower computation complexity than ML based detection method. Specifically, a signal-to-noise ratio (SNR) gain as high as 12 dB is observed in the SSK scenario and about 5 dB in case of a GSSK scenario upon employing our proposed detection methods.

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“…The room dimensions employed in the numerical calculations are not exactly the "typical ones", but a larger space has been chosen, in order to extract clearer conclusions about the effectiveness of the experimental optical filter under consideration, for the VLC links. The modulation scheme of space shift keying (SSK) which is used has proved to be a very effective technique for increasing the VLC system performance [19,20]. According to this technique, each LED lamp is active in a specific timeslot, transmitting a different symbol.…”

Section: Introductionmentioning

confidence: 99%

Experimental Implementation and Theoretical Investigation of a Vanadium Dioxide Optical Filter for Bit Error Rate Enhancement of Enhanced Space Shift Keying Visible Light Communication Systems

et al. 2019

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Visible Light Communication (VLC) systems use light-emitting diode (LED) technology to provide high-capacity optical links. The advantages they offer, such as the high data rate and the low installation and operational cost, have identified them as a significant solution for modern networks. However, such systems are vulnerable to various exogenous factors, with the background sunlight noise having the greatest impact. In order to reduce the negative influence of the background noise effect, optical filters can be used. In this work, for the first time, a low-cost optical vanadium dioxide (VO2) optical filter has been designed and experimentally implemented based on the requirements of typical and realistic VLC systems in order to significantly increase their performance by reducing the transmittance of background noise. The functionality of the specific filter is investigated by means of its bit error rate (BER) performance estimation, taking into account its experimentally measured characteristics. Numerous results are provided in order to prove the significant performance enhancement of the VLC systems which, as it is shown, reaches almost six orders of magnitude in some cases, using the specific experimental optical filter.

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Performance Analysis of DC-SSK Scheme and Its Power Allocation in VLC System

Cited by 6 publications

References 12 publications

Space-Time Block Coded Spatial Modulation for Indoor Visible Light Communications

Space-Time Block Coded Spatial Modulation for Indoor Visible Light Communications

Sparsity Signal Detection for Indoor GSSK-VLC System

Experimental Implementation and Theoretical Investigation of a Vanadium Dioxide Optical Filter for Bit Error Rate Enhancement of Enhanced Space Shift Keying Visible Light Communication Systems

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