Realization of high-speed OWC links by incorporating hybrid OCDMA and MDM scheme for HAP-to-satellite applications

Kumari, Meet; Arya, Vivek

doi:10.1007/s11082-023-06226-1

Cited by 8 publications

(6 citation statements)

References 39 publications

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“…To evaluate the system's performance, BER, eye diagrams, constellation diagrams, received power, optical and electrical spectra, and OAM modes were considered. Mathematically, BER performance in terms of EV M is defined as [17]:…”

Section: Results and Analysismentioning

confidence: 99%

“…Figure 1 illustrates an optical quadrature phase shift keying (QPSK) transmitter consisting of a laser at a specific wavelength modulated by a 4-QAM OFDM signal. Laser phase noise is modeled incorporating the probability density function as follows [17]. This design uses four transmitters operating at wavelengths of 1550, 1550.8, 1551.6, and 1552.4 nm.…”

Section: Proposed Designmentioning

confidence: 99%

“…It incorporates a bandwidth of 22 GHz, output power of 10 dBm, responsivity of 1 A/W and an 8 nA dark current. Through a pair of electrical amplifiers having a gain of 20 dB, the received electrical signal is amplified and passed through a pair of low-pass Bessel filters [17].…”

Section: Proposed Designmentioning

confidence: 99%

“…Phase shift keying (PSK) sequence generators represent antipodal signals in binary phases 00 (binary '0 ′ ) and 1800 (binary '1 ′ ). In addition, a BER analyzer is used to evaluate the system performance using the NRZ modulation format [17].…”

Section: Proposed Designmentioning

confidence: 99%

“…These beams also support data encoding in amplitude and phase, which offer more system reliability under severe atmospheric conditions. Again, four LG modes over the OWC link under atmospheric turbulence are represented as [17]:…”

Section: Proposed Designmentioning

confidence: 99%

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Realization of 4 × 200 Gbps 4-QAM OFDM-OWC System Using Higher Order OAM Modes for HAP-to-Satellites Scenario

Kumari,

Mishra

2024

Photonics

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Recently, there has been an increase in interest in using optical wireless communication (OWC) links on high-altitude platforms (HAPs) for satellite applications. We implement an orbital angular momentum (OAM) multiplexed orthogonal frequency division multiplexing (OFDM) system using an OWC link. A space-to-air scenario is considered in which transmission pointing errors, geometric loss, turbulence, and additional link losses are taken into account to extend the transmission range, system capacity, and throughput. At 200 Gbps per channel data rate, four different OAM modes are implemented with higher order Laguerre–Gaussian (LG) modes of [0,0], [0,13], [0,40], and [0,80]. An aggregate 800 Gbps data rate can deliver a maximum OWC range of 3300–5000 km for all channels. The maximum received power over the 1000 km range is −19.34 to −32.59 dBm with an additional gain of 0–2.5 dB. It is also possible to obtain a better performance over large distances of 500–3500 km with an error vector magnitude of 2.98–17.5%. Furthermore, a high gain of −40.80 dB, a signal-to-noise ratio (SNR) of 55.21 dB, and an optical SNR of 67.25 dB can be achieved for varied transmitter pointing errors of 0.1 rad. As compared to other literature, this system exhibits a superior performance.

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Section: Results and Analysismentioning

confidence: 99%

Section: Proposed Designmentioning

confidence: 99%

Section: Proposed Designmentioning

confidence: 99%

Section: Proposed Designmentioning

confidence: 99%

Section: Proposed Designmentioning

confidence: 99%

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