Performance study of ACO-OFDM and DCO OFDM in optical camera communication system

Jihad, Noor J.; Satar, Sinan M. Abdul

doi:10.1109/nicst50904.2020.9280319

Cited by 9 publications

(6 citation statements)

References 15 publications

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“…Specifically, only odd subcarriers are modulated to enable direct clipping of the time-domain signals at zero. The organized symbols for the ACO-OFDM signal are described as follows [27]:…”

Section: Aco-ofdmmentioning

confidence: 99%

Optical-OFDM VLC System: Peak-to-Average Power Ratio Enhancement and Performance Evaluation

A. Zenhom,

Hamad,

Alghassab

et al. 2024

Sensors

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Visible Light Communication (VLC) systems are favoured for numerous applications due to their extensive bandwidth and resilience to electromagnetic interference. This study delineates various constructions of Optical Orthogonal Frequency Division Multiplexing (O-OFDM) approaches employed in VLC systems. Various factors are elaborated within this context to ascertain a more effective O-OFDM approach, including constellation size, data arrangement and spectral efficiency, power efficiency, computational complexity, bit error rate (BER), and peak-to-average power ratio (PAPR). This paper seeks to assess these approaches’ BER and PAPR performance across varying modulation orders. Regrettably, in VLC systems based on OFDM methodology, the superposition of multiple subcarriers results in a high PAPR. Therefore, this study aims to diminish the PAPR in VLC systems, enhancing system performance. We propose a non-distorting PAPR reduction technique, namely the Vandermonde-Like Matrix (VLM) precoding technique. The suggested technique is implemented across various O-OFDM approaches, including DCO-OFDM, ADO-OFDM, ACO-OFDM, FLIP-OFDM, ASCO-OFDM, and LACO-OFDM. Notably, this method does not affect the system’s data rate because it does not require the mandatory transmission of side information. Furthermore, this technique can decrease the PAPR without impacting the system’s BER performance. This study compares the proposed PAPR reduction technique against established methods documented in the literature to evaluate their efficacy and validity rigorously.

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“…Specifically, only odd subcarriers are modulated to enable direct clipping of the time-domain signals at zero. The organized symbols for the ACO-OFDM signal are described as follows [27]:…”

Section: Aco-ofdmmentioning

confidence: 99%

Optical-OFDM VLC System: Peak-to-Average Power Ratio Enhancement and Performance Evaluation

A. Zenhom,

Hamad,

Alghassab

et al. 2024

Sensors

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“…It has been used in different system for the reduction of error rates. For the block synchronization cyclic prefix can be helpful with the inter-symbol-interference (ISI) [9,10]. For the spectral efficiency windowing techniques were used [10,11].…”

Section: *Author For Correspondencementioning

confidence: 99%

OFDM-MIMO based carrier frequency offset modulation for the multi-carrier transmission

2022

IJACR

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In this paper a hybrid framework has been developed which is based on OFDM-MIMO system. This system adopted carrier frequency offset (CFO) modulation scheme for the multi-carrier transmission. Different subcarriers have been considered with quadrature amplitude modulation (QAM). Different channel capacity along with the subcarrier and lengths have been considered for the system performance estimation. CFO with different channel consideration is found to be helpful in the improvement of the system. The results show the variations in subcarrier, length and variations. The results show the improvement in bit error rate (BER) in case of increasing the number of systems, subcarriers and variations in correlation.

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“…The output of IFFT becomes real after applying Hermitian symmetry in ( 1) and (2). The clipping at zero technique is used at bipolar to unipolar block in Fig.…”

Section: Fig 2 Dco-ofdm Generation System 24 Aco-ofdmmentioning

confidence: 99%

“…Today, the Internet of Things (IoT) networks have gained almost importance due to connecting and exchanging data between an enormous number of embedded sensors and devices over the internet. The OWC can take an essential rule for satisfying the IoT requirement for high data rate and a real-time communication system for future communication networks, including Fifth-and Sixth-Generation (5G and 6G, respectively) communication systems [2]- [4]. The OWC based Visible Light Communication (VLC) has been of tremendous interest for indoor communication due to high data rate, low cost, and security [5]- [7].…”

Section: -Introductionmentioning

confidence: 99%

Performance enhancement for visible light communication based ADO-OFDM

2021

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Performance study of ACO-OFDM and DCO OFDM in optical camera communication system

Cited by 9 publications

References 15 publications

Optical-OFDM VLC System: Peak-to-Average Power Ratio Enhancement and Performance Evaluation

Optical-OFDM VLC System: Peak-to-Average Power Ratio Enhancement and Performance Evaluation

OFDM-MIMO based carrier frequency offset modulation for the multi-carrier transmission

Performance enhancement for visible light communication based ADO-OFDM

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