Optical single carrier-interleaved frequency division multiplexing for visible light communication systems

Saied, Osama; Ghassemlooy, Zabih; Rajbhandari, Sujan; Burton, Andrew

doi:10.1016/j.ijleo.2019.06.010

Cited by 10 publications

(17 citation statements)

References 13 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Saied et al [12] developed a new optical SCFDM signalling system for direct detection and intensity modulation in VLC. From the experimental research, it showed that the signalling system efficiently enhances the PAPR of DC biased optical OFDM.…”

Section: Literature Workmentioning

confidence: 99%

Effective PAPR reduction in SCFDM‐based massive MIMO system using binary crow search algorithm for visible light communication towards 5G networks

Sindhuja¹,

Shankar²

2020

IET Communications

View full text Add to dashboard Cite

Section: Literature Workmentioning

confidence: 99%

Effective PAPR reduction in SCFDM‐based massive MIMO system using binary crow search algorithm for visible light communication towards 5G networks

Sindhuja¹,

Shankar²

2020

IET Communications

View full text Add to dashboard Cite

“…In [25], it was demonstrated that, because of HS only half of the ACO-SCFDE samples would have a single carrier PAPR behavior, while the other half will have the same PAPR as in OFDM. However, in our recent work [28,29], we showed that PAPR of optical IFDMA can be improved by not considering HS requirement and therefore making it to be as low as the PAPR of IFDMA in the RF domain. This was achieved in [29] by symmetrically repeating the IFDMA time domain symbol twice by means of setting the interleaving factor (Q) in the frequency domain to be 2.…”

Section: Introductionmentioning

confidence: 97%

“…However, in our recent work [28,29], we showed that PAPR of optical IFDMA can be improved by not considering HS requirement and therefore making it to be as low as the PAPR of IFDMA in the RF domain. This was achieved in [29] by symmetrically repeating the IFDMA time domain symbol twice by means of setting the interleaving factor (Q) in the frequency domain to be 2. That is, the IFDMA symbol was transmitted through two sub symbols, where the real and imaginary parts of IFDMA time domain samples were transmitted using the 1 st and 2 nd sub symbols, respectively.…”

Section: Introductionmentioning

confidence: 97%

“…However, for VLC systems, the 1 st SC (i.e., the DC term) is used for keeping the LED on, dimming or shifting the amplitude levels within the dynamic range of LEDs [1,2]. Because of the implementation of the interleaving mapping and FFT process at the Tx, the 1 st SC in [28,29] needs to be a modulated SC, which is affected by the DC bias and consequently affecting all samples in the time domain. Thus, resulting in 2 dB of SNR penalty compared with traditional optical OFDM to achieve the same bit error rate (BER) as demonstrated in [29].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Unipolar-pulse amplitude modulation frequency division multiplexing for visible light communication systems

Saied¹,

Ghassemlooy

Zvánovec

et al. 2020

Opt. Eng.

Self Cite

View full text Add to dashboard Cite

Asymmetrically clipped optical orthogonal frequency division multiplexing (ACO-OFDM) has been proposed in visible light communication (VLC) systems to overcome the DC-biased optical OFDM (DC-OFDM) power consumption issue at the cost of the available electrical spectral efficiency. Due to the implementation of inverse fast Fourier transform (IFFT), all the optical OFDM schemes including ACO-OFDM suffer from large peck to average power ratio (PAPR), which degrade the performance in VLC systems as the light emitting diodes used as the transmitter have a limited optical power-current linear range. To address the PAPR issue in ACO-OFDM, in this work we introduce a unipolar-pulse amplitude modulation frequency division multiplexing (U-PAM-FDM) by adopting the single carrier frequency division multiple access (SC-FDMA). This is achieved by considering a PAM as an SC-FDMA data symbols and inserting a conjugate copy of the middle and first SC-FDMA FFT output subcarriers after the middle and last subcarriers, respectively. Simulation results show that, for the proposed scheme the PAPR is 3.6 dB lower compared with ACO-OFDM. The PAPR improvement is further analyzed with the simulation results demonstrating that the proposed scheme offers 2.5 dB more average transmitted power compared to ACO-OFDM.

show abstract

“…Visible light communications (VLCs) have received a great deal of research attention as a promising candidate for future broadband networks by utilizing white light emitting diodes (LEDs) in the existing solid-state lighting (SSL) infrastructure. LEDs offer multiple usages such as illumination, high-speed data transmission and localization in various applications [1][2][3]. Compared to the wireless radio frequency (RF) technologies, VLC systems are energyefficient, cost-effective, and ideal for use in hospitals, aircraft cabins or in petrochemical industries since it does not interfere with other radio frequency (RF) systems nor induces any health issues.…”

Section: Introductionmentioning

confidence: 99%

DFT Spread-Optical Pulse Amplitude Modulation for Visible Light Communication Systems

Saied¹,

Rabie

2022

IEEE Access

Self Cite

View full text Add to dashboard Cite

DC-biased optical orthogonal frequency division multiplexing (DCO-OFDM) has been proposed in visible light communication (VLC) to overcome the limited modulation bandwidth of light emitting diode (LED). Due to the implementation of the inverse fast Fourier transform at the DCO-OFDM transmitter, DCO-OFDM suffers from its high peak-to-average power ratio (PAPR), which restricts its use in some VLC applications, especially where the optical power efficiency is a crucial requirement. That is because the LEDs used in VLC systems have a limited optical power-current linear range. To this end, a novel discrete Fourier transform spread-optical pulse amplitude modulation (DFTS-OPAM) signal scheme based on the single carrier-interleaved frequency division multiple access (SC-IFDMA) signal is introduced in this paper to address the high PAPR issue of OFDM. DFTS-OPAM is achieved by considering a PAM as an SC-IFDMA data symbol and duplicate the output vector of the fast Fourier transform at the SC-IFDMA transmitter side. Simulation results show that the PAPR of the proposed scheme is 7 dB lower than that of DCO-OFDM. Furthermore, this significant PAPR improvement is experimentally investigated where the practical results show that the proposed scheme can provide more 2.5 dB reduction in the average transmitted power requirement compared to DCO-OFDM and can subsequently increase the maximum achieved distance between the transmitter and the receiver by 44%.INDEX TERMS single carrier frequency division multiple access, DC-biased optical orthogonal frequency division multiplexing; visible light communication, peak-to-average power ratio, light-emitting diode, dynamic range.

show abstract

Optical single carrier-interleaved frequency division multiplexing for visible light communication systems

Cited by 10 publications

References 13 publications

Effective PAPR reduction in SCFDM‐based massive MIMO system using binary crow search algorithm for visible light communication towards 5G networks

Effective PAPR reduction in SCFDM‐based massive MIMO system using binary crow search algorithm for visible light communication towards 5G networks

Unipolar-pulse amplitude modulation frequency division multiplexing for visible light communication systems

DFT Spread-Optical Pulse Amplitude Modulation for Visible Light Communication Systems

Contact Info

Product

Resources

About