Radio resource management strategies for DVB-S2 systems operated with flexible satellite payloads

Cocco, Giuseppe; Cola, Tomaso de; Angelone, Martina; Katona, Zsolt

doi:10.1109/asms-spsc.2016.7601536

Cited by 10 publications

(2 citation statements)

References 19 publications

(20 reference statements)

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“…MF-TDMA Frame). In the FL, [3], [4] and [5] among others tackle this issue with different approaches, the former by successively allocating sub-carriers and then optimizing the power for each while the latter uses a heuristic benefiting from the beam-hopping flexibility. What differs between the FL and RL in solving this problem is the nature of interference.…”

Section: Dynamic Interference Coordinationmentioning

confidence: 99%

Interference-aware frame optimization for the return link of a multi-beam satellite

Couble

Chaput

Deleu

et al. 2017

2017 IEEE International Conference on Communications (ICC)

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High throughput satellites have proven to be an excellent solution to provide Internet services to white spots or to complement other existing infrastructures. With the use of multi-beam antennas, the same frequency may be reused dozens of times across a single satellite coverage area, increasing the system capacity and profitability. Legacy frequency reuse patterns such as uncoordinated 4-color scheme ensure interference isolation at the expense of important capacity reduction, using only one fourth of the operator's share in the scarce Ka band. Thus, to increase the per-beam available bandwidth, it is necessary to look for more aggressive and efficient Frequency Reuse schemes, generating higher Co-Channel Interference which has to be analyzed and handled. In this paper, we focus on the DVB-RCS2 return link of a multi-beam satellite and investigate the possibility of reaching the upper bound of a coordinated 2-color system capacity through the use of Interference-aware User Scheduling techniques. We first formalize the problem as an Integer Linear Program and study the impact of greedy simplifications on the optimality and processing times of our optimization models.

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Section: Dynamic Interference Coordinationmentioning

confidence: 99%

Interference-aware frame optimization for the return link of a multi-beam satellite

Couble

Chaput

Deleu

et al. 2017

2017 IEEE International Conference on Communications (ICC)

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“…Meanwhile, a fundamental challenge for satellite communications (SatCom) is the spectrum exploitation for the continuous growth of broadband applications and multimedia services [9,10,11,12]. To improve the spectrum efficiency, cognitive radio (CR) has exploited the spectrum sharing in terrestrial networks for more than ten years as a mainly approach, which is also a very promising candidate in SatCo [13,14,15].…”

Section: Introductionmentioning

confidence: 99%

Sensing-Based Dynamic Spectrum Sharing in Integrated Wireless Sensor and Cognitive Satellite Terrestrial Networks

Bian

et al. 2019

Sensors

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This paper presents a cognitive satellite communication based wireless sensor network, which combines the wireless sensor network and the cognitive satellite terrestrial network. To address the conflict between the continuously increasing demand and the spectrum scarcity in the space network, the cognitive satellite terrestrial network becomes a promising candidate for future hybrid wireless networks. With the higher transmit capacity demand in satellite networks, explicit concerns on efficient resource allocation in the cognitive network have gained more attention. In this background, we propose a sensing-based dynamic spectrum sharing scheme for the cognitive satellite user, which is able to maximize the ergodic capacity of the satellite user with the interference of the primary terrestrial user below an acceptable average level. Firstly, the cognitive satellite user monitors the channel allocated to the terrestrial user through the wireless sensor network; then, it adjusts the transmit power based on the sensing results. If a terrestrial user is busy, the satellite user can access the channel with constrained power to avoid deteriorating the communication quality of the terrestrial user. Otherwise, if the terrestrial user is idle, the satellite user allocates the transmit power based on its benefit to enhance the capacity. Since the sensing-based dynamic spectrum sharing optimization problem can be modified into a nonlinear fraction programming problem in perfect/imperfect sensing conditions, respectively, we solve them by the Lagrange duality method. Computer simulations have shown that, compared with the opportunistic spectrum access, the proposed method can increase the channel capacity more than 20% for Pav=10dB in a perfect sensing scenario. In an imperfect sensing scenario, Pav=15 dB and Qav=5 dB, the optimal sensing time achieving the highest ergodic capacity is about 2.34 ms when the frame duration is 10 ms.

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Joint Power, Frequency and Precoding Optimisation in a Satellite SDMA Communication System

Vidal

Legay

Goussetis

2020

2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (As

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Radio resource management strategies for DVB-S2 systems operated with flexible satellite payloads

Cited by 10 publications

References 19 publications

Interference-aware frame optimization for the return link of a multi-beam satellite

Interference-aware frame optimization for the return link of a multi-beam satellite

Sensing-Based Dynamic Spectrum Sharing in Integrated Wireless Sensor and Cognitive Satellite Terrestrial Networks

Joint Power, Frequency and Precoding Optimisation in a Satellite SDMA Communication System

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