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Fast spatial orthogonal frequency‐division multiplexing based on two‐dimensional discrete cosine transform for a pixelated optical wireless communication system

Zi‐Xin Xu, Longtao Bi, Qingqing Chen
2021 IET Optoelectronics  
Compared with traditional spatial orthogonal frequencydivision multiplexing (OFDM) based on IFFT2, the proposed FOFDM has similar BER performance, twice the spatial efficiency for the same constellation  ...  channel.  ...  Examples of such 2-D FDM-based schemes are spatial DC-biased optical OFDM (SDCO-OFDM) [1, 2, [8] [9] [10] , spatial asymmetrically-clipped optical OFDM (SACO-OFDM) [11] [12] [13] [14] [15] [16] and  ... 
doi:10.1049/ote2.12059 fatcat:26lxwbpywjeojb5svb6ex5rjae

Sample indexed spatial orthogonal frequency division multiplexing

Pankil Butala Pankil Butala, Hany Elgala Hany Elgala, Thomas D. C. Little Thomas D. C. Little
2014 Chinese Optics Letters (COL)  
Asymmetrically clipped optical OFDM (ACO-OFDM) and DC-biased optical OFDM (DCO-OFDM) are two well-known optical OFDM (O-OFDM) techniques suitable for intensity-modulation direct-detection (IM/DD) optical  ...  Orthogonal frequency division multiplexing (OFDM) is widely implemented to achieve better spectral efficiency in wireless channels.  ...  The transmitters are assumed to have a linear electrical to optical conversion and transmit the upper peak signals without clipping.  ... 
doi:10.3788/col201412.090602 fatcat:mkuqszz56vhc7hbqloc5jip64e

A Novel Transceiver Model for Polar Transform Optical (PTO-) OFDM for Visible Light Communication (VLC) Based on Peak to Average Power Ratio Reduction using Precoding

Nevertheless, both OFDM transmission techniques for Visible optical links, similar to radiofrequency (RF), suffer greatly from irregular excessive Peak-to-Average power ratio (PAPR).  ...  A precoding technique is proposed to reduce the PAPR of intensity-modulated for direct detectability of the OFDM signal destined for the wireless optical link using Cartesian-to-Polar conversion.  ...  Factors Influenced by OFDM's PAPR A limiting factor to any OFDM systems, including RF wireless or optical wireless, the significance of PAPR comes into effect at the point of amplification and conversion  ... 
doi:10.35940/ijitee.e9914.0891020 fatcat:unlzxdl7lvev7mg6stu5yxioom

Analog Radio Over Fiber Fronthaul for High Bandwidth 5G Millimeter-Wave Carrier Aggregated OFDM

Dimitrios Konstantinou, Alvaro Morales, Simon Rommel, Thiago R. Raddo, Ulf Johannsen, Idelfonso Tafur Monroy
2019 2019 21st International Conference on Transparent Optical Networks (ICTON)  
Multi-Gbit/s data rates are achieved in limited bandwidth, with BER below the 25 % overhead FEC limit after millimeter-wave wireless transmission over 2.2 m.  ...  optical fronthaul using radio-over-fiber.  ...  It also shows the received constellation diagrams for all bands captured at an optical power of 3.5 dBm for the 4-band and at 4 dBm for the 8-band OFDM.  ... 
doi:10.1109/icton.2019.8840525 fatcat:dowrz4qcgbcdpjy65m3nqwxcjm

Indoor visible light communications, networking, and applications

Jie Lian, Zafer Vatansever, Mohammad Noshad, Maïté Brandt-Pearce
2019 Journal of Physics: Photonics  
Nomenclature ACO-OFDM asymmetrically clipped optical OFDM APD avalanche photodiode BER bit error rate CDMA code division multiple access CEO-OFDM clipping-enhanced optical OFDM DCO-OFDM DC-biased optical  ...  These algorithms are designed considering practical constraints, such as the bandlimited channel, illumination requirements, and transmitted power limitations.  ...  Unfortunately, the high peak-to-average power ratio of OFDM can introduce distortion due to the peak power limitation of LEDs.  ... 
doi:10.1088/2515-7647/aaf74a fatcat:cepmpc6rhfhjzdthikamvlsicq

OFDM-Based Optical Spatial Modulation [article]

Anil Yesilkaya, Rui Bian, Iman Tavakkolnia, Harald Haas
2019 arXiv   pre-print
It can be inferred from the results that TD SM is a strong candidate among OFDM-based optical SM systems for future optical IM/DD wireless communication systems.  ...  In this paper, the two most common OFDM-based SM types, namely frequency domain SM (FD-SM) and time domain SM (TD-SM), are investigated for optical wireless communications (OWC).  ...  Furthermore, the likelihood of significant channel estimation errors is limited due to the quasi-static characteristics of the indoor optical wireless communications channel.  ... 
arXiv:1911.10380v1 fatcat:7lqi2l5effde3fqrvdhs5wznq4

OFDM-Based Optical Spatial Modulation

Anil Yesilkaya, Rui Bian, Iman Tavakkolnia, Harald Haas
2019 IEEE Journal on Selected Topics in Signal Processing  
In this paper, the two most common OFDM-based SM types, namely frequency domain SM (FD-SM) and time domain SM (TD-SM), are investigated for optical wireless communications (OWC).  ...  It can be inferred from the results that TD-SM is a strong candidate among OFDMbased optical SM systems for future optical IM/DD wireless communication systems.  ...  Furthermore, the likelihood of significant channel estimation errors is limited due to the quasi-static characteristics of the indoor optical wireless communications channel.  ... 
doi:10.1109/jstsp.2019.2920577 fatcat:ohuxsgn2pbfdlluom3prdjch4y

Optical wireless communication systems

Zabih Ghassemlooy, Stanislav Zvanovec, Mohammad-Ali Khalighi, Wasiu O. Popoola, Joaquin Perez
2017 Optik (Stuttgart)  
The emerging field of optical wireless communication (OWC) systems is seen as potential complementary technology to the radio frequency wireless communications in certain applications.  ...  More research and developments in OWC is still needed in order for it to be adopted in current and future communication systems.  ...  Offiong et al on "Analysis of PAPR in Optical OFDM Systems with Grouped LEDs" extends the study of the pilot assisted technique in the spatial domain optical OFDM by using grouped LEDs to theoretically  ... 
doi:10.1016/j.ijleo.2017.11.052 fatcat:3en73pedrvg75frtgvekeagezy

Optimization and Comparison of M-PAM and Optical OFDM Modulation for Optical Wireless Communication

Shokoufeh Mardanikorani, Xiong Deng, Jean-Paul Linnartz
2020 IEEE Open Journal of the Communications Society  
In this paper, we challenge whether its large Peak-to-Average-Power Ratio (PAPR) and resulting large DC bias are justified.  ...  When corrected for the path loss and normalized to the noise power in the 3 dB bandwidth of the LED, we call this the Normalized Power Budget (NPB).  ...  Numerical optimization for a constrained peak optical power in [12] showed that in a limited bandwidth, DCO-PAM performs better.  ... 
doi:10.1109/ojcoms.2020.3034204 fatcat:2wv6ijnk3zaujgvettnevlgtwy

Multiple Access for Visible Light Communications: Research Challenges and Future Trends [article]

Sarah S. Bawazir, Paschalis C. Sofotasios, Sami Muhaidat, Yousof Al-Hammadi, George K. Karagiannidis
2016 arXiv   pre-print
The ever-increasing demand of mobile Internet and multimedia services poses unique and significant challenges for current and future generation wireless networks.  ...  considerations of optical code division multiple access techniques and their adoption in indoor VLC applications.  ...  Clipped DC-biased Optical OFDM. 4) Polar OFDM.  ... 
arXiv:1612.05894v1 fatcat:swn7cgozg5e53afvqjhhcksem4

Optical Rate-Splitting Multiple Access for Visible Light Communications [article]

Shimaa Naser, Lina Bariah, Wael Jaafar, Sami Muhaidat, Paschalis C. Sofotasios, Mahmoud Al-Qutayri, Octavia A. Dobre
2020 arXiv   pre-print
This requires a paradigm shift towards the development of innovative technologies for next generation wireless systems.  ...  The proliferation of connected devices and emergence of internet-of-everything represent a major challenge for broadband wireless networks.  ...  Several optical OFDM techniques were proposed, such as DC biased optical OFDM (DCO-OFDM), asymmetrically clipped OFDM (ACO-OFDM), asymmetrically clipped DC-biased optical OFDM (ACDO-OFDM), fast-OFDM and  ... 
arXiv:2002.07583v2 fatcat:hlfxktsvbjag7mi2jyzeqlmbtu

IEEE Access Special Section Editorial: New Waveform Design and Air-Interface for Future Heterogeneous Network Towards 5G

Qilian Liang, Tariq S. Durrani, Xuemai Gu, Jinhwan Koh, Yonghui Li, Xin Wang
2020 IEEE Access  
direct current biased optical OFDM (ADO-OFDM) for 5G networks.  ...  The article ''Energy efficiency optimization for OFDM based 5G wireless networks with simultaneous wireless information and power transfer,'' by Lu et al., studies the energy efficiency optimization problem  ... 
doi:10.1109/access.2020.3019946 fatcat:ardgft3rhbbcrgfmhqkxtvujh4

Capacity and Error Performance Verification of Multi-Antenna Schemes in Radio-Over-Fiber Distributed Antenna System

Anthony E. Aighobahi, Nathan J. Gomes
2016 Journal of Lightwave Technology  
Further, SER is reduced for a downlink 2x2 wireless MIMO using the zero-forcing algorithm while, most importantly, greatly increased capacity is achieved through the spatial multiplexing gain.  ...  It is shown that significantly reduced symbol error rate (SER) and modestly increased capacity is achieved for a wireless 1x2 SIMO uplink using the maximal ratio combining (MRC) processing algorithm and  ...  Philippos Assimakopoulos for advice on the measurements.  ... 
doi:10.1109/jlt.2016.2565258 fatcat:qqoayzl5srccfegkluqjio357q

Impact of spatial sampling frequency offset and motion blur on optical wireless systems using spatial OFDM

M. Rubaiyat H. Mondal
2016 EURASIP Journal on Wireless Communications and Networking  
Pixelated communication systems can convey high-speed data over optical wireless channels by using spatial orthogonal frequency division multiplexing (spatial OFDM) modulation.  ...  Two forms of spatial OFDM, spatial asymmetrically clipped optical OFDM (SACO-OFDM) and spatial dc-biased optical OFDM (SDCO-OFDM), have been considered in the literature of pixelated communication.  ...  transmitted average optical power is considered as the limiting factor [26] .  ... 
doi:10.1186/s13638-016-0741-y fatcat:tmt2ay3a45gbhbj7ac6bib3ypy

Special Issue on: Optical Wireless Communications for Emerging Connectivity Requirements

Mohammad Ali Khalighi, Zabih Ghassemlooy, Mohamed-Slim Alouini, Steve Hranilovic, Stanislav Zvanovec
2021 IEEE Open Journal of the Communications Society  
frequency division multiplexing (OFDM) scheme to address the limited modulation bandwidth of LEDs in VLC networks, and outlines its limitation in terms of peak-to-average power ratio (PAPR) and the need  ...  The performance of DC-biased optical (DCO)-OFDM and classical pulse-amplitude modulation (PAM) signaling are hence contrasted for different signal-to-noise ratio (or the so-called "normalized power budget  ... 
doi:10.1109/ojcoms.2020.3045818 fatcat:2vtpypfly5bxvhjy5vf6prg6fy
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