What does this research mean for the field?

Interleaving depth and hybrid automatic repeat request (HARQ) retransmissions effectively mitigate burst errors in LEO-to-ground free-space optical downlinks, though this mitigation comes at the cost of increased delay and memory requirements. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Evaluate and compare fading mitigation techniques—including LDPC channel coding, Reed-Solomon packet coding, interleaving, and Hybrid ARQ—for low Earth orbit free-space optical downlinks under realistic atmospheric fading dynamics.

August 29, 2026International Journal of Satellite Communications and Networking

Error‐Control Strategies for Space‐Ground Optical Links: A Comparative Study of ARQ, FEC, and Interleaving

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Authors

ADArthur Duysens MMMarc Moeneclaey NNNele Noels

Discussion

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Overview

Comparative modeling study evaluates fading mitigation techniques in satellite optical downlinks, highlighting trade-offs between burst error mitigation, memory overhead, and transmission delay.

Key Points

Evaluate and compare fading mitigation techniques—including LDPC channel coding, Reed-Solomon packet coding, interleaving, and Hybrid ARQ—for low Earth orbit free-space optical downlinks under realistic atmospheric fading dynamics.
Simulated an intensity-modulated low Earth orbit satellite-to-ground optical link using time series of received power gains accounting for atmospheric scintillation and beam pointing jitter.
Incorporated both thermal noise and signal-dependent shot noise into an avalanche photodiode receiver model while varying channel interleaver symbol sizes.
Tested three error-mitigation schemes: rate-1/2 LDPC channel coding with optional block interleaving, concatenated LDPC and Reed-Solomon packet coding with optional packet interleaving, and Type-1 Hybrid ARQ.
Interleaving depth and Hybrid ARQ retransmissions effectively mitigate burst errors caused by time-correlated fading, significantly lowering packet error rates.
Reductions in packet error rate achieved via deep interleaving and packet-level retransmissions incur substantial penalties in transmission delay and onboard memory requirements.
Performance metrics including goodput, delay, and memory delineate distinct operational trade-offs across varying channel interleaver symbol sizes and coding configurations.

Cite This Study

Duysens et al. (2026) studied this question.

synapsesocial.com/papers/6a92996e8e5d7d1fc0c116d9 https://doi.org/10.1002/sat.70083

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August 29, 2026International Journal of Satellite Communications and Networking

Error‐Control Strategies for Space‐Ground Optical Links: A Comparative Study of ARQ, FEC, and Interleaving

View Full Paper

Ask AI

Bookmark

Authors

ADArthur Duysens MMMarc Moeneclaey NNNele Noels

Discussion

Member takes

Overview

Comparative modeling study evaluates fading mitigation techniques in satellite optical downlinks, highlighting trade-offs between burst error mitigation, memory overhead, and transmission delay.

Key Points

Evaluate and compare fading mitigation techniques—including LDPC channel coding, Reed-Solomon packet coding, interleaving, and Hybrid ARQ—for low Earth orbit free-space optical downlinks under realistic atmospheric fading dynamics.
Simulated an intensity-modulated low Earth orbit satellite-to-ground optical link using time series of received power gains accounting for atmospheric scintillation and beam pointing jitter.
Incorporated both thermal noise and signal-dependent shot noise into an avalanche photodiode receiver model while varying channel interleaver symbol sizes.
Tested three error-mitigation schemes: rate-1/2 LDPC channel coding with optional block interleaving, concatenated LDPC and Reed-Solomon packet coding with optional packet interleaving, and Type-1 Hybrid ARQ.
Interleaving depth and Hybrid ARQ retransmissions effectively mitigate burst errors caused by time-correlated fading, significantly lowering packet error rates.
Reductions in packet error rate achieved via deep interleaving and packet-level retransmissions incur substantial penalties in transmission delay and onboard memory requirements.
Performance metrics including goodput, delay, and memory delineate distinct operational trade-offs across varying channel interleaver symbol sizes and coding configurations.

Cite This Study

Duysens et al. (2026) studied this question.

synapsesocial.com/papers/6a92996e8e5d7d1fc0c116d9 https://doi.org/10.1002/sat.70083

View Full Paper

Ask AI

Bookmark