MIMO techniques for high data rate free space optical communication system in log-normal channel

Abaza, Mohamed; Mesleh, Raed; Mansour, Ali; Alfalou, Ayman

doi:10.1109/taeece.2013.6557185

Cited by 13 publications

(6 citation statements)

References 15 publications

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“…The PDF of the channel gain for the m th channel in MISO topology is similar to the PDF of SISO topology with the difference of dividing the variance of the log-normal channel by the number of transmitting antennas [25] and can express as:…”

Section: Channels Modelingmentioning

confidence: 99%

Impact of pointing error on SISO/MISO drones swarm-based free space optical system in weak turbulence regime

Mahdi

Mazher²,

Uçan³

2021

IJEECS

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Applying the drone-based free space optical (FSO) technology is recent in communication systems. The FSO technology hashigh-security features dueto narrow beamwidth, insusceptible to interferences, free license and landline connection is not appropriate. However, these advantages face many obstacles that affect the system's performance, such as random weather conditions and misalignment. The pointing error Hpis one of the critical factors of the channel gain H. The related parameters of the Hp factor: the pointing error angles θr and the path length Z, were manipulated to extract the applicable values at various receiver diameter values. The proposed system has two topologies: single input single output (SISO) and multiple input single output (MISO), flying in weak atmospheric turbulence. The simulation was done using MATLAB software 2020. The average bit error rate (ABER) for the system versus signal-to-noise ratio (SNR) were verified and analyzed. The results showed that at θr=10−3rad, Z increased in the range 10~100m for each one-centimeter increase of DR. At θr=10−2rad, the applicable Z was nearly 10% of the link distance Z when θr=10−3rad was applied. Consequently, an increase in θr must correspond decrease in Z and vice versa to maintain the system at high performance.

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Section: Channels Modelingmentioning

confidence: 99%

Impact of pointing error on SISO/MISO drones swarm-based free space optical system in weak turbulence regime

Mahdi

Mazher²,

Uçan³

2021

IJEECS

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“…Many researchers recently consider optical wireless communication (OWC) including ultraviolet (UV), infrared (IR) and visible light (VL) as an attractive complementary and alternative technique of RF. OWC systems include outdoor systems, such as free-space optical (FSO), ultraviolet communication (UVC) and underwater communications [ 13 , 14 ]. Moreover, IR communication and visible light communication (VLC) systems are widely used indoor systems [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

A Survey of NOMA for VLC Systems: Research Challenges and Future Trends

Sadat

Abaza

Mansour

et al. 2022

Sensors

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Visible light communication (VLC) has become a promising technology for high data rate communications and an attractive complementary to conventional radio frequency (RF) communication. VLC is a secure, energy efficient and cost-effective technology that exploits the existing infrastructure, particularly in indoor environments, for wireless data transmission. Nevertheless, the main limitation of developing high data rate VLC links is the narrow modulation bandwidth of light-emitting diodes (LEDs), which is in the megahertz range. The power domain nonorthogonal multiple access (PD-NOMA) scheme is envisioned to address several challenges in VLC systems. In this paper, we present a detailed overview of PD-NOMA based VLC systems. Moreover, we introduce insights on some PD-NOMA VLC system constraints and challenges such as power allocation, clipping effect, MIMO and security. Finally, we provide open research problems as well as possible directions for future research to pave the way for the implementation of PD-NOMA VLC systems.

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“…Forward error correction and spatial diversity techniques are shown to decrease atmospheric turbulence effects on FSO links. 7,8 Multiple-input multiple-output (MIMO) is an effective technique to mitigate the effect of atmospheric turbulence. MIMO system using spatial modulation (SM) for indoor optical wireless communication has been proposed in Ref.…”

Section: Introductionmentioning

confidence: 99%

The performance of space shift keying for free-space optical communications over turbulent channels

et al. 2015

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This paper evaluates the performance of space shift keying (SSK) free-space optical communication (FSO) over moderate and strong turbulent channels. It has been shown previously that repetition codes (RCs) using intensity modulation with direct detection techniques are superior to SSK system for a spectral efficiency of 1 bit/s/Hz. It is shown in this study that SSK outperforms RCs using M -ary pulse amplitude modulation for spectral efficiencies of 3 bits/s/Hz or larger. Analytical expressions for the bit error rate for the SSK system under study are derived and extensive simulation results corroborate the correctness of the conducted analysis.

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MIMO techniques for high data rate free space optical communication system in log-normal channel

Cited by 13 publications

References 15 publications

Impact of pointing error on SISO/MISO drones swarm-based free space optical system in weak turbulence regime

Impact of pointing error on SISO/MISO drones swarm-based free space optical system in weak turbulence regime

A Survey of NOMA for VLC Systems: Research Challenges and Future Trends

The performance of space shift keying for free-space optical communications over turbulent channels

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