DPSK modulated multiple apertures receiver system for satellite-to-ground heterodyne optical communication

Li, Kangning; Lin, Bor-Luh; Ma, Jing

doi:10.1016/j.optcom.2019.124466

Cited by 13 publications

(7 citation statements)

References 13 publications

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“…The satellite laser link has the advantages of large capacity, comprehensive coverage, low power consumption, and low cost, meaning that it has garnered significant attention from the academic community [2,3]. Satellite laser communication is divided into inter-satellite and satellite-ground laser communication, and satellite-ground laser communication links can be divided into uplink and downlink [4]. The optical effects generated by atmospheric turbulence are different for uplink and downlink.…”

Section: Introductionmentioning

confidence: 99%

Performance of HQAM/XQAM Laser Communication System in Anisotropic Non-Kolmogorov Ground–HAP–Satellite Uplink

Jiang

Wang

2023

Photonics

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Satellite laser communication can achieve high-speed, high-precision, and high-security broadband communication without being constrained by the electromagnetic spectrum, which has attracted attention. So, this paper proposes the use of a high-altitude platform (HAP) under anisotropic non-Kolmogorov turbulence to improve the communication performance of the system. Cross quadrature amplitude modulation (XQAM) and hexagon quadrature amplitude modulation (HQAM) are applied to the ground–HAP–satellite (G-H-S) laser communication system. Considering the combined effects of uplink light intensity scintillation, beam wander, and the angle of arrival fluctuation, the G-H-S system’s bit error rate (BER) closure expression is derived under the EW distribution. Simultaneously, the relationship between the G-H-S system’s signal-to-noise ratio (SNR) and BER under different anisotropic factor u values is simulated and compared with the traditional ground–satellite (G-S) system. The results show that the communication performance of the G-H-S system with HQAM modulation is better. In addition, the effects of the zenith angle, receiving aperture, transmitter beam radius, and beam divergence angle on the BER performance of the system are also studied. Finally, the correctness of the analysis results is verified via Monte Carlo simulation. This research will benefit the design and optimization of satellite laser communication systems.

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Section: Introductionmentioning

confidence: 99%

Performance of HQAM/XQAM Laser Communication System in Anisotropic Non-Kolmogorov Ground–HAP–Satellite Uplink

Jiang

Wang

2023

Photonics

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“…On the other hand, the received DPSK signal is demodulated by two successive bit intervals and does not require phase noise estimation. Thus, the coherent DPSK can be considered an attractive alternative to BPSK and QPSK for satellite-to-ground laser communication links along with the receiver's spatial diversity (Niu et al 2011a, Li et al 2020.…”

Section: Introductionmentioning

confidence: 99%

“…In (Ma et al 2015), the performance of BPSK satellite-toground coherent optical communications with SC and MRC spatial diversity was studied over GG atmospheric turbulence. In (Li et al 2020), the…”

Section: Introductionmentioning

confidence: 99%

“…Spatial diversity is one of the most powerful techniques that is used to reduce atmospheric turbulence effects. Moreover, coherent optical receivers with homodyne/heterodyne detection are an attractive technique to reduce the undesirable effects of atmospheric turbulence and enhance the overall system performance (Niu et al 2010, Niu et al 2011a, Niu et al 2011b, Ma et al 2015, Li et al 2020, Ata et al 2022, Kumar & Krishnan 2022. Compared to intensity modulation with direct detection (IM/DD) techniques, coherent optical receiver systems offer excellent rejection of background noise and high power efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…Spatial diversity techniques such as selection combining (SC), maximum ratio combining (MRC), and equal gain combining (EGC) have been studied in the cases of terrestrial and satellite coherent optical communication systems (Niu et al 2010, Niu et al 2011a, Niu et al 2011b, Ma et al 2015, Li et al 2020. In these scenarios, different atmospheric turbulence statistical models were considered.…”

Section: Introductionmentioning

confidence: 99%

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Performance analysis of coherent DPSK SIMO laser-based satellite-to-ground communication link over weak-to-strong turbulence channels considering Kolmogorov and non-Kolmogorov spectrum models

Abouelez

2022

Preprint

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In the present work, the average bit error rate (BER), outage probability (OP), and ergodic capacity of the satellite-to-ground heterodyne optical communication system with receiver spatial diversity are analysed. A differential phase-shift keying modulation technique is used. The propagated laser signal from the satellite to the ground station is assumed to be subjected to Málaga-distributed atmospheric turbulence. The atmospheric turbulence statistics are carried out based on the conventional Kolmogorov spectrum model and the three-layer altitude (TLA) non-Kolmogorov spectrum model. The performance of popular diversity combining techniques, namely, maximum ratio combining (MRC) and equal gain combining (EGC) techniques are analyzed. The statistical models of the MRC technique under the Málaga-distributed atmospheric channel model are obtained in analytical form expressions. The statistical models of the EGC technique under the Málaga-distributed atmospheric channel model are obtained via the fast Fourier transform representation of the characteristic function method. Based on these statistical models, average BER, OP, and ergodic capacity expressions for each type of diversity combining technique are derived. For the communication system under investigation, the performance of MRC and EGC multiple aperture receiver systems are compared to a single aperture receiver with the same total aperture area. These comparisons are carried out under the same conditions in terms of zenith angle and signal-to-noise ratio. The obtained results show that the performance of the optical communication system under investigation with MRC and EGC receivers can be improved by increasing the order of diversity. In addition, it is found that the difference in the performance between Kolmogorov and TLA non-Kolmogorov spectrum models is not significant at low zenith angles, while this difference increases as the zenith angle increases. All numerical results are verified by Monte-Carlo simulations.

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Mitigation of atmospheric turbulence on up and downlink optical communication systems using receiver diversity and adaptive optics

2022

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DPSK modulated multiple apertures receiver system for satellite-to-ground heterodyne optical communication

Cited by 13 publications

References 13 publications

Performance of HQAM/XQAM Laser Communication System in Anisotropic Non-Kolmogorov Ground–HAP–Satellite Uplink

Performance of HQAM/XQAM Laser Communication System in Anisotropic Non-Kolmogorov Ground–HAP–Satellite Uplink

Performance analysis of coherent DPSK SIMO laser-based satellite-to-ground communication link over weak-to-strong turbulence channels considering Kolmogorov and non-Kolmogorov spectrum models

Mitigation of atmospheric turbulence on up and downlink optical communication systems using receiver diversity and adaptive optics

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