All-optical two-way relaying free-space optical communications for HAP-based broadband backhaul networks

Vu, Minh Q.; Nguyen, Nga T. T.; Pham, Hien T. T.; Dang, Ngoc T.

doi:10.1016/j.optcom.2017.10.025

Cited by 8 publications

(2 citation statements)

References 24 publications

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“…The method of all-optical two-way half-duplex relaying (AFand AR-relaying) has reported that FSO was successfully simulated for connecting a high-altitude platform at a link distance of 20 Km [10]. An FSO experiment with 40 Gbps successfully demonstrated reaching the path length of optical propagation at 4 Km [11].…”

Section: Introductionmentioning

confidence: 99%

The improvement of fiber-detection method to enhance the output of amplify-received relaying on FSO communications

Darusalam,

Priambodo,

Zulkifli

et al. 2022

International Journal of Electronics and Telecommunications

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The performance of free-space optical (FSO) communications that using an optical amplifier (OA) in the scheme of an amplify-received (AR)-relaying has a major drawback in the detection of input signal quality under the effects of turbulence. As an OA is based on a fiber-detection (FD) method to receive and delivers a signal at the amplification process stage, there is an opportunity to implement an optical spatial filter (OSF) to improve the quality of an input signal. In this paper, as the continuation of previous work on the direct-detection, the OSF is applied on the AR-relaying. The novelty proposed in this work is the improvement of FD method where the OSF is designed as the integration of cone reflector, pinhole and multi-mode fiber with an OA. The OSF produces an optical signal, the input of the OA, which minimizes the effects of turbulence, background noise and signal fluctuation. Thus, OA in AR-relaying produces signal output with high power and rise up below threshold level. Additionally, an OSF with a lower pinhole diameter produces the best quality of the signal spectral to be delivered into an EDFA. Through this implementation, the performance of optical relaying on FSO can be significantly improved.

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Section: Introductionmentioning

confidence: 99%

The improvement of fiber-detection method to enhance the output of amplify-received relaying on FSO communications

Darusalam,

Priambodo,

Zulkifli

et al. 2022

International Journal of Electronics and Telecommunications

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“…To improve observation and coverage, the construction of surveillance and communication systems on near space platform has received further attention. HAPS has a similar development history to satellite communications in the 1960s [7]. The international telecommunication union (ITU) describes HAPS as "a new technology with a promising application prospect that can subvert the development of the telecommunications industry."…”

Section: Introductionmentioning

confidence: 99%

Time-Varying Communication Channel High Altitude Platform Station Link Budget and Channel Modeling

Liu

et al. 2018

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Because of the high BER (Bit Error Rate), low time delay and low channel transmission efficiency of HAPS (High Altitude Platform Station) in the near space. The link budget of HAPS and channel model are proposed in this paper. According to the channel characteristic, the channel model is set up, combined with different CNR (Carrier Noise Ratio), elevation angle, coding situations of wireless communication link by using Hamming code, PSK (Pulse Shift Keying) and Golay code respectively, then the situations of link quality and BER are analyzed. The simulation results show that the established model of the link budget and channel are suitable for the theoretical analysis results. The elevation of the HAPS communication link is smaller while the BER is increasing. The case of channel in the coding is better than in the un-coded situation. When every bit power and thermal noise power spectral density is larger, the BER of the HAPS communication link is becoming smaller.

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On the performance of AF full FSO two-way relay networks over exponentiated Weibull fading channels

Erdoğan

2020

Optics Communications

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All-optical two-way relaying free-space optical communications for HAP-based broadband backhaul networks

Cited by 8 publications

References 24 publications

The improvement of fiber-detection method to enhance the output of amplify-received relaying on FSO communications

The improvement of fiber-detection method to enhance the output of amplify-received relaying on FSO communications

Time-Varying Communication Channel High Altitude Platform Station Link Budget and Channel Modeling

On the performance of AF full FSO two-way relay networks over exponentiated Weibull fading channels

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