Performance enhancement of hybrid‐SIM for optical wireless downlink communication with aperture averaging and receiver diversity

Dubey, Dheeraj; Prajapati, Yogendra Kumar; Tripathi, Rajeev

doi:10.1049/iet-com.2020.0261

Cited by 6 publications

(4 citation statements)

References 40 publications

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“…, the data, with instantaneous SNR, y i , at the receiver is detected incorrectly if y i < ζ min , where ζ min is the threshold SNR. The condition when the instantaneous SNR falls below the threshold, a phenomenon known as outage arises, and its probability is given as 13,14 E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 2 3 ; 1 1 6 ; 6 3 3…”

Section: Outage Probabilitymentioning

confidence: 99%

“…The channel capacity in slow fading channel is given as C=B log2(1+ζmin), the data, with instantaneous SNR, yi, at the receiver is detected incorrectly if yi<ζmin, where ζmin is the threshold SNR. The condition when the instantaneous SNR falls below the threshold, a phenomenon known as outage arises, and its probability is given as 13 , 14 Pout=P(ℓ≤2σnRsGαIo2SNRthγ).…”

Section: Performance Parameter Evaluationmentioning

confidence: 99%

“…In our previous research, we examined performance metrics in the presence of pointing errors using a PPM-based binary frequency shift keying (BFSK) hybrid modulation for the transmission of a signal. This modulation provided power efficiency at the expense of bandwidth in the presence of large eddies, 14 and it was used to transmit the signal. In this paper, we replace BFSK with specific Gaussian minimum shift keying (GMSK), called a low-density parity-check (LDPC)-coded nonrecursive GMSK scheme, subjected to low SNR, limited power, and spectrum resources, which outshine PPM and OOK in terms of power and spectral efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Optimized performance analysis of nonrecursive low-density parity-check-coded Gaussian minimum shift keying in 5G-application

2023

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We present the low-density parity-check-coded nonrecursive Gaussian minimum shift keying-based hybrid modulation scheme for free-space optical (FSO) communications under optimal signal-to-noise ratio, limited power, and spectrum resources to support 5G and beyond applications with high-throughput efficiency. Our work investigates and approximates the error rate of the proposed scheme across a negative exponential stochastic FSO channel model with misalignment-induced fading. Using the Meijer-G function over the combined channel probability density function, we develop a unique closed-form formulation of outage probability. The potential benefits of utilizing the normalized beamwidth to achieve the desired error rate ð≈10 −12 Þ is discussed. An improvement of 88.64% in the case of narrow beamwidth is perceived which collaborates with the proposed analytical expressions. The precision of our study is supported by numerical data from Monte Carlo simulation.

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Section: Outage Probabilitymentioning

confidence: 99%

Section: Performance Parameter Evaluationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimized performance analysis of nonrecursive low-density parity-check-coded Gaussian minimum shift keying in 5G-application

2023

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“…a promising alternative in cases where buried fiber connectivity is costly and/or infeasible, including inter-building, video broadcasting, security, last-mile solutions, satellite communication, high-capacity backhaul network, etc [4]. With the development of FSO systems, receiver diversity has become an effective alternative to a single large receiver [5,6]. In recent years, space-to-fiber coupling structures based on few-mode fibers (FMFs) have been investigated as a promising technology for combating the turbulence effect within apertures [7].…”

Section: Introductionmentioning

confidence: 99%

The impact of optical system aberration and fiber positioning error on the FMF coupling efficiency of an FSO receiver under atmospheric turbulence

Bian¹,

Li²,

Li³

et al. 2022

J. Opt.

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Thanks to the rapid development of coherent optical fiber communication, the fiber-based coupling structure of the free-space optical (FSO) communication systems becomes a typical structure. In such systems, the received light field is coupled to a single-mode fiber or a few-mode fiber (FMF). In this study, we respectively establish the expectation model of FMF coupling efficiency under conditions of optical system aberration (OSA) and fiber positioning error (FPE) based on the Kolmogorov power-law spectrum and plane wave. The performances of FMF with different coupling geometry parameters are analyzed. To the best of our knowledge, it is the first time to analyze the impacts of OSA and FPE on the coupling efficiency of the FMF under different turbulence strengths and coupling geometry parameters are analyzed.

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PPM-SIM Based FSO System Under Various Environmental Conditions

Sahoo

2021

Lecture Notes in Electrical Engineering

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Performance enhancement of hybrid‐SIM for optical wireless downlink communication with aperture averaging and receiver diversity

Cited by 6 publications

References 40 publications

Optimized performance analysis of nonrecursive low-density parity-check-coded Gaussian minimum shift keying in 5G-application

Optimized performance analysis of nonrecursive low-density parity-check-coded Gaussian minimum shift keying in 5G-application

The impact of optical system aberration and fiber positioning error on the FMF coupling efficiency of an FSO receiver under atmospheric turbulence

PPM-SIM Based FSO System Under Various Environmental Conditions

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