Analysis of PolSK based FSO system using wavelength and time diversity over strong atmospheric turbulence with pointing errors

Prabu, K.; Cheepalli, Shashidhar; Kumar, D. Sriram

doi:10.1016/j.optcom.2014.03.058

Cited by 51 publications

(12 citation statements)

References 23 publications

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“…Based on the obtained closed form analytical expressions for atmospheric channels modeled with Gamma-Gamma distribution, Negative Exponential distribution, K distribution, and I-K distribution, i.e., (10), (13), (15), and (19), respectively, the ABER as a function of the SNR and FSO link distance, L, are graphically presented. The FSO system is considered at three different wavelengths:…”

Section: Numerical Resultsmentioning

confidence: 99%

Analysis of signal quality in FSO systems with PolSK modulation

Todorovic¹,

Jakšić²,

Spalević³

et al. 2020

Serb J Electr Eng

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In this paper, the quality of the Polarization Shift Keying (PolSK) modulated signal in a Free Space Optical (FSO) system is analyzed. The atmospheric channel is statistically modeled with four different distributions, namely, the Gamma-Gamma distribution, Negative Exponential distribution, Kdistribution, and I-K distribution. For all four channel models, the Average Bit Error Rate (ABER) at the receiving side of the system is determined in an analytically closed form. The results are graphically presented and discussed in order to determine the impact of certain parameters on the ABER, i.e., the quality of the received signal in the PolSK modulated FSO system. These parameters are the Signal-to-Noise Ratio (SNR), the FSO link distance, the wavelength at which the signal is transmitted, and the atmospheric turbulence strength.

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Section: Numerical Resultsmentioning

confidence: 99%

Analysis of signal quality in FSO systems with PolSK modulation

Todorovic¹,

Jakšić²,

Spalević³

et al. 2020

Serb J Electr Eng

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“…Through time diversity [49,52,53], an FSO system employs a single transmitter-receiver pair, but the signal is retransmitted at different time slots. Finally, assuming wavelength diversity [49,54], an FSO system uses a composite transmitter, and thus, copies of the same signal are transmitted at the same time at different wavelengths towards a number of receivers [51].…”

Section: Introductionmentioning

confidence: 99%

Transdermal Optical Wireless Links with Multiple Receivers in the Presence of Skin-Induced Attenuation and Pointing Errors

et al. 2019

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The last few years, the scientific field of optical wireless communications (OWC) has witnessed tremendous progress, as reflected in the continuous emergence of new successful high data rate services and variable sophisticated applications. One such development of vital research importance and interest is the employment of high speed, robust, and energy-effective transdermal optical wireless (TOW) links for telemetry with implantable medical devices (IMDs) that also have made considerable progress lately for a variety of medical applications, mainly including neural recording and prostheses. However, the outage performance of such TOW links is significantly degraded due to the strong attenuation that affects the propagating information-bearing optical signal through the skin, along with random misalignments between transmitter and receiver terminals, commonly known as pointing error effect. In order to anticipate this, in this work we introduce a SIMO TOW reception diversity system that employs either OOK or more power-effective L-PPM schemes. Taking into account the joint impact of skin-induced attenuation and non-zero boresight pointing errors, modeled through the suitable Beckmann distribution, novel closed-form mathematical expressions for the average BER of the total TOW system are derived. Thus, the possibility of enhancing the TOW availability by using reception diversity configurations along with the appropriate modulation format is investigated. Finally, the corresponding numerical results are presented using the new derived theoretical outcomes.

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“…Bit are encoded as different states of polarization (SOP). Hence such a scheme is promising to be robust against atmospheric turbulence [20]. Therefore, in this paper, a simple method based on a single LiNo 3 MZM has been used to generate mm wave.…”

Section: Introductionmentioning

confidence: 99%

Optical carrier suppression with modified duo binary return to zero and polarization shift keying modulation schemes over free space communication system

Magidi

Pondani

2019

SN Appl. Sci.

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Free space optical (FSO) communication has been a subject of interest for researcher and the corporate world since a few decades ago. This has been motivated by the huge benefits associated with this technology. Meanwhile, the generation and all optical up conversion of millimeter wave (mmw) for propagation in a FSO channel has been an important research direction. In this article, a single side band tone mmw generated by the optical carrier suppression (OCS) method has been modulated by modified duo-binary return to zero (MDRZ) and polarization shift keying (PolSK) modulated baseband data. The resulting optical signal was propagated in a FSO cannel subjected to combined weather and atmospheric turbulence induced fading. Later on, a comparative analysis was carried out between hybrid OCS/MDRZ and OCS/PolSK mmw signals propagated over free space. Using the performance metrics such as the bit error rate, quality (Q) factor and the received power among others, the simulation results indicated that hybrid OCS/MDRZ performs better than hybrid OCS/PolSK.

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Analysis of PolSK based FSO system using wavelength and time diversity over strong atmospheric turbulence with pointing errors

Cited by 51 publications

References 23 publications

Analysis of signal quality in FSO systems with PolSK modulation

Analysis of signal quality in FSO systems with PolSK modulation

Transdermal Optical Wireless Links with Multiple Receivers in the Presence of Skin-Induced Attenuation and Pointing Errors

Optical carrier suppression with modified duo binary return to zero and polarization shift keying modulation schemes over free space communication system

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