Error Rate of Subcarrier Intensity Modulations for Wireless Optical Communications

Song, Xuegui; Niu, Mingbo; Cheng, Julian

doi:10.1109/lcomm.2012.021612.112554

Cited by 54 publications

(30 citation statements)

References 13 publications

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“…From (19), we can obtain for any given and (17) values for both NCFSK and DPSK. Therefore, the average BER of NCFSK/DPSK over the Gamma-Gamma channels can be obtained from (18) as (21) and the asymptotic BER in (20) can be simplified to (22) We comment that the BER expression in (21) and the asymptotic BER expression in (22) are the same as those obtained in [6].…”

Section: A a Unified Approachmentioning

confidence: 92%

“…When , the GammaGamma model specializes to the -distributed model which further specializes to the negative exponential model when approaches . The PDF of a negative exponential RV with normalized mean is given as (7) Substituting a series expansion of [6] into (6), we can rewrite the Gamma-Gamma PDF as (8) where (9) Using (5), (8), and an integral identity [18, eq. 3.326(2)], we derive the MGF of over the Gamma-Gamma channels as (10) where denotes the expectation, and is defined as (11) Using (5) and (7), we obtain the MGF of over the negative exponential channels as (12) where is the complementary error function.…”

Section: B Atmospheric Turbulence Modelmentioning

confidence: 99%

“…Recently, Song et al analyzed the BER performance of subcarrier binary DPSK and binary noncoherent frequency-shift keying (NCFSK) modulated OWC systems over the Gamma-Gamma channels using a series expansion approach [6]. The authors also studied the BER performance of a subcarrier differential quadrature phase-shift keying (DQPSK) modulated OWC system over the Gamma-Gamma channels [12].…”

Section: Introductionmentioning

confidence: 99%

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Subcarrier Intensity Modulated Optical Wireless Communications Using Noncoherent and Differentially Coherent Modulations

Song

Cheng

2013

J. Lightwave Technol.

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Error rate performance is analyzed for subcarrier noncoherent and differentially coherent modulated optical wireless communication systems over atmospheric turbulence channels. Both Gamma-Gamma and negative exponential channels are considered. Using a moment generating function approach, we obtain a unified bit-error rate expression for a family of noncoherent and differentially coherent modulations. We also analyze the symbol-error rate performance of subcarrier -ary differential phase-shift keying and -ary noncoherent frequency-shift keying modulated systems using the same frequency domain approach. Our asymptotic analysis reveals relative error rate performance of -ary differential phase-shift keying and -ary noncoherent frequency-shift keying in different channel conditions.

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Section: A a Unified Approachmentioning

confidence: 92%

Section: B Atmospheric Turbulence Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Subcarrier Intensity Modulated Optical Wireless Communications Using Noncoherent and Differentially Coherent Modulations

Song

Cheng

2013

J. Lightwave Technol.

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“…In [3], Popoola et al studied the BER performance of a subcarrier DPSK modulated OWC link in the negative exponential channels. More recently, Song et al analysed the BER of a subcarrier DPSK modulated OWC system over the Gamma-Gamma channels and obtained a closed-form BER expression using a series expansion approach [4]. All the aforementioned work has mainly focused on binary DPSK.…”

mentioning

confidence: 99%

“…Using (2), (3), and a series expansion of the modified Bessel function of the second kind [4] K n (x) = p 2 sin(pn)…”

mentioning

confidence: 99%

Subcarrier DQPSK modulated optical wireless communications in atmospheric turbulence

2012

Self Cite

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Bit error rate (BER) performance is studied for a subcarrier differential quadrature phase-shift keying modulated optical wireless communication system over the Gamma-Gamma turbulence channels. A closed-form BER expression is derived using a series expansion approach. Asymptotic analysis shows that the diversity order of the considered system depends only on the smaller channel parameter.Introduction: As an attractive alternative to pulse position modulation (PPM) and on-off keying (OOK), subcarrier intensity modulation (SIM) with direct detection was first proposed for optical wireless communication (OWC) in [1]. It can be shown that SIM can have better error rate performance than PPM and OOK. Although a SIM system with coherent modulations is superior to that with noncoherent or differentially coherent modulations, it requires carrier phase recovery for the subcarrier signal to achieve its optimal performance [2]. Thus, it is difficult to perform coherent detection in applications where the phase of the received subcarrier signal cannot be tracked accurately. In such scenarios, noncoherent frequency shift keying (NCFSK) or differential phase shift keying (DPSK) can be employed at the expense of system performance. In [1], Huang et al. first studied the bit error rate (BER) performance of a subcarrier DPSK modulated OWC system over the lognormal channels. In [3], Popoola et al. studied the BER performance of a subcarrier DPSK modulated OWC link in the negative exponential channels. More recently, Song et al. analysed the BER of a subcarrier DPSK modulated OWC system over the Gamma-Gamma channels and obtained a closed-form BER expression using a series expansion approach [4]. All the aforementioned work has mainly focused on binary DPSK. As a multilevel modulation scheme, differential quadrature PSK (DQPSK) can achieve higher spectral efficiency than binary DPSK. However, to the best of the authors' knowledge, no prior work has been carried out to study the error rate performance of a subcarrier DQPSK modulated OWC system over turbulence channels. In this Letter, we study the BER performance of a subcarrier DQPSK modulated OWC system over the Gamma-Gamma channels and derive a closed-form BER expression.

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Performance analysis of subcarrier intensity modulation using rectangular QAM over Malaga turbulence channels with integer and non‐integer β

Alheadary

Park

Alouini

2016

Wireless Communications

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In this paper, we derive the performances of optical wireless communication system utilizing adaptive subcarrier intensity modulation over the Malaga turbulent channel. More specifically, analytical closed‐form solutions and asymptotic results are derived for average bit error rate, achievable spectral efficiency, outage probability, and ergodic capacity by utilizing series expansion identity of modified Bessel function. Our asymptotic and analytical results based on series solutions with finite numbers highly matched to the numerical results. By exploiting the inherent nature of fading channel, the proposed adaptive scheme enhances the spectral efficiency without additional transmit power while satisfying the required bit error rate criterion. Copyright © 2016 John Wiley & Sons, Ltd.

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Error Rate of Subcarrier Intensity Modulations for Wireless Optical Communications

Cited by 54 publications

References 13 publications

Subcarrier Intensity Modulated Optical Wireless Communications Using Noncoherent and Differentially Coherent Modulations

Subcarrier Intensity Modulated Optical Wireless Communications Using Noncoherent and Differentially Coherent Modulations

Subcarrier DQPSK modulated optical wireless communications in atmospheric turbulence

Performance analysis of subcarrier intensity modulation using rectangular QAM over Malaga turbulence channels with integer and non‐integer β

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