Interference-Aware Radio Resource Management for Cognitive High-Throughput Satellite Systems

Zhang, Rui; Ruan, Yuhan; Li, Yongzhao; Liu, Can

doi:10.3390/s20010197

Cited by 7 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The CCI problem focuses on the resource allocation and interference management between the beams in multi-beam satellite system. The authors of [20] proposed high-throughput satellite (HTS) system architecture for geostationary satellites with multibeam satellite communication system. In [21], the optimal frequency channel allocation for LEO satellite networks was investigated by adopting the Q-learning technique.…”

Section: Related Workmentioning

confidence: 99%

Dynamic Downlink Interference Management in LEO Satellite Networks Without Direct Communications

Yun

et al. 2023

IEEE Access

View full text Add to dashboard Cite

We investigate effective interference management for Low Earth Orbit (LEO) satellite networks that provide downlink services to ground users and share the same frequency spectrum range. Since there are multi-group LEO satellites with different constellation orbits, the ground users will experience time-varying interference due to the overlapping of main/side lobes of the satellite beams, which becomes even challenging when the interfering satellites cannot communicate directly. To address the problem, we consider two LEO satellite groups that provide communication service in the same ground area, while competing for communication resources. We develop solutions that maximize the throughput and manage the time-varying interference under a certain level, without explicit message exchanges between the satellite groups. By exploiting statistical learning and deep reinforcement learning techniques, we develop learning-based resource allocation schemes and evaluate their performance through extensive simulations. We show their effectiveness under different reward settings and different interference managements, and demonstrate that a Deep Q-Network (DQN)-based scheme can achieve the close-to-optimal performance.

show abstract

Section: Related Workmentioning

confidence: 99%

Dynamic Downlink Interference Management in LEO Satellite Networks Without Direct Communications

Yun

et al. 2023

IEEE Access

View full text Add to dashboard Cite

show abstract

“…With the rapidly increased demand for high data rate services, high-throughput satellite (HTS) systems have recently been considered as the key technology in the satellite industry. In an HTS system, multiple narrow spot-beams with high power are used [1][2][3], resulting in the requirement for high-performance and reliable filters without causing performance degradation of adjacent beam elements, as is conceptually shown in Figure 1. However, conventional filters are only matched in the passband and are fully reflective in the stopband and transition band, resulting in unwanted interferences in multi-channel operations of HTS radio frequency (RF) chains configured with complicated nonlinear devices.…”

Section: Introductionmentioning

confidence: 99%

Absorptive K-Band Bandpass Filter Using a Balanced Recursive Structure

Moon

Lee

2020

Electronics

View full text Add to dashboard Cite

This article presents a new K-band absorptive bandpass filter (ABPF) based on a microwave balanced recursive architecture. The proposed structure was configured using two passive microwave hybrid couplers, two conventional bandpass filters (BPFs), and a recursive path control module consisting of a phase shifter and an optionally variable gain amplifier. Using the proposed structure, stable return characteristics that were insensitive to the output load variation in the passband, a reduction in standing wave due to absorption in the stopband, and potentially high reliability could be achieved. Furthermore, since the same BPFs were reused, the electrical filtering order within the given physical BPF stages could be increased effectively. The proposed architecture was verified by comparing it with the performance of the conventional two-stage cascaded BPF. The measured results showed a 3 dB passband at 280 MHz with the center frequency at 19.9 GHz and improved roll-off characteristics. Furthermore, the stopband showed the reflectionless characteristic with the return loss being better than 7 dB.

show abstract

“…In related works in this domain, a high-throughput satellite (HTS) system architecture has been proposed for interference-aware resource management in multi-beam satellite system [3]. The impact of interference management between coordinated access scheme and random access scheme has been compared in unmanned aerial vehicle (UAV) relay satellite networks [4].…”

mentioning

confidence: 99%

Downlink spectrum sharing of heterogeneous communication systems in LEO satellite networks

Yun

et al. 2022

J. Commun. Netw.

View full text Add to dashboard Cite

show abstract

Interference-Aware Radio Resource Management for Cognitive High-Throughput Satellite Systems

Cited by 7 publications

References 36 publications

Dynamic Downlink Interference Management in LEO Satellite Networks Without Direct Communications

Dynamic Downlink Interference Management in LEO Satellite Networks Without Direct Communications

Absorptive K-Band Bandpass Filter Using a Balanced Recursive Structure

Downlink spectrum sharing of heterogeneous communication systems in LEO satellite networks

Contact Info

Product

Resources

About