Multibeam satellite networks in Ka band have been designed to accommodate the increasing traffic demands expected future. However, these systems are spectrum limited due current allocation policies. This paper investigates potential of applying cognitive radio techniques communications (SatCom) order increase opportunities for future generations without interfering with operation incumbent services. These extra can potentially amount 2.4 GHz bandwidth downlink and 2 uplink high density fixed...

This Letter addresses the statistical modeling of dual-polarized MIMO-LMS fading channels. In absence accurate experimental results, a model for characterization channels is proposed based on consolidation available results SISO-LMS and MIMO wireless as well their extrapolation to case interest. Moreover, step-by-step methodology simulation time-series generation channel provided, which useful design performance assessment transmission systems. The incorporates effects all relevant critical...

Summary This paper presents initial results available from the European Commission Horizon 2020 5G Public Private Partnership Phase 2 project “SaT5G” (Satellite and Terrestrial Network for 5G). After describing concept, objectives, challenges, research pillars addressed by SaT5G project, this elaborates on selected use cases scenarios satellite communications positioning in usage scenario of enhanced mobile broadband.

Satellite communication has recently been included as one of the key enabling technologies for 5G backhauling, especially delivery bandwidth-demanding enhanced mobile broadband (eMBB) applications in 5G. In this paper, we present a 5G-oriented network architecture that is based on satellite communications and multi-access edge computing to support eMBB applications, which investigated EU 5GPPP phase-2 terrestrial project. We specifically focus using proposed assure quality-of-experience...

This paper investigates the applicability of multiple-input multiple-output (MIMO) technology to satellite communications at Ku-band and above. After introducing possible diversity sources form a MIMO matrix channel in environment, particular emphasis is put on diversity. Two specific different topics from field applications these frequencies are further analyzed: (i) capacity improvement achieved by spatial multiplexing systems (ii) interference mitigation employing receive antenna...

This paper discusses the integration of satellite and terrestrial networks over an Information Centric Networking (ICN) architecture. Focus is given on identification key features that characterize ICN architectures how these may impact, but also be affected by, networks. The work presented contains intermediate results obtained as part ongoing ESA ARTES study `φSAT' role satellites in Future Internet.

Deploying high throughput satellite systems in Ka band to accommodate the ever increasing demand for data rates hits a spectrum barrier. Cognitive utilization of allocated frequency bands other services is potential solution. Designing cognitive zone around incumbent broadcasting service (BSS) feeder links beyond which fixed (FSS) terminals can freely utilize same considered this paper. In addition, we show that there rain rate called wall, above downlink communications become infeasible.

This paper investigates the design of power and spectrally efficient coded modulations based on amplitude phase shift keying (APSK) with application to broadband satellite communications. Emphasis is put 64APSK constellations. The APSK modulation has merits for digital transmission over nonlinear channels due its spectral efficiency combined inherent robustness against distortion. scheme been adopted in DVB-S2 Standard video broadcasting. Assuming an ideal rectangular pulse, which no...

Land mobile satellite (LMS) channels at the L (1/2 GHz) and S (2/4 frequency bands are mainly affected by propagation effects due to local environment of a terminal, such as multipath, shadowing, blockage. Future systems for services (MSS) will operate higher bands, Ku (12/14 Ka (20/30 GHz), where tropospheric also play an important role. Experimental campaigns conducted so far Ku/Ka-band LMS have not considered any possible correlation between effects. However, recent experimental work has...

In conventional cognitive radio systems, the secondary user employs a "listen-before-talk" paradigm, where it senses if primary is active or idle, before decides to access licensed spectrum. However, this method faces challenges, with most important one being reduction of user's throughput, as no data transmission takes place during sensing period. context, idea simultaneous spectrum and proposed. This paper studies system model concept obtained through collaboration transmitter receiver....

The 5G vision embraces a broad range of applications including the connectivity in underserved and remote areas. In particular, for these applications, satellites are going to play role future networks provide capacity on trains, vessels, aircraft, base stations around globe. this paper, edge node concept, developed evaluated with over-the-air tests using geostationary orbit, is presented. article covers testbed demonstration study Europe large-scale latest standardization network...

Optical feeder links are an attractive alternative to the RF in satellite communications (SatCom). In this paper, we present initial results from optical link study. We discuss architecture of a geostationary earth orbit (GEO) system based on links. To mitigate effects cloud coverage, which is main availability-limiting factor, Ground Station (OGS) diversity employed. Moreover, spatial multiplexing scheme considered. Assuming ON-OFF channel model, number required OGSs ensure availability and...

This paper presents in detail the successful over-the-air demonstration test conducted Mobile World Congress (MWC) 2019 Barcelona as part of ESA ARTES projects SATis5 and OSMOSIS. demo showcased satellite integration with latest 3GPP Release 15 5G Core Network, allowing to operate backhaul network a cellular access network, demonstrated efficient edge content delivery via 4G/LTE integrated network. The key underlying architecture concept Multiaccess Edge Computing (MEC) use case are...

This paper addresses statistical modeling of MIMO LMS channels for satellite digital multimedia broadcasting (SDMB) applications. Dual polarization diversity is particularly considered. In the absence accurate experimental channel models in literature, emphasis put on sound consolidation available relevant single-input single-output (SISO) and terrestrial wireless communications as well their novel extrapolation to case interest. An model L/S-band correlated dual circularly polarized 2×2...

SUMMARY Past studies on the railway satellite channel (RSC) at Ku band and above consider exclusively attenuation coming from metal power arches (PAs) along route, producing significant though deterministic periodical fast fading. Nevertheless, limited attention has been given to model tropospheric effects RSC. The present paper takes a more comprehensive view of RSC by introducing novel stochastic dynamic rain fading in mobile systems top diffraction because PAs. proposed approach builds...

Cognitive Radio (CR) is a promising technology for the flexible spectrum utilization in wireless communications. Very recently, there has been increasing interest applicability of CR techniques satellite communication systems. This paper investigates impact propagation phenomena co-existence scenario uplink Fixed Satellite Service (FSS) and terrestrial (FS) systems operating Ka-band. Specifically, we analytically derive Signal-to-Interference Ratio (SIR) Signal-to-Noise plus Interference...

Satellite communication has recently been included as one of the enabling technologies for 5G backhauling, in particular delivery bandwidth-demanding enhanced mobile broadband (eMBB) application data 5G. In this paper we introduce a 5G-oriented network architecture empowered by satellite communications supporting emerging video delivery, which is investigated EU 5GPPP Phase 2 SAT5G Project. Two complementary use cases are introduced, including (1) links to support offline multicasting and...

The performance of broadband fixed wireless access (BFWA) systems operating at frequencies above 10 GHz is adversely influenced by rainfall, which introduces severe attenuation and a short-term variation to the received signal. In this letter, fading channel BFWA link modeled as Rician with strong K-factor. A novel analytical model relating K-factor rain effects presented based on which, an prediction for cumulative distribution derived. Experimental data necessary validate proposed models....

The convergence of innovation in satellite communications, 5G terrestrial systems and cloud technology promises a ubiquitous networking solution, which offers wide range features, including but not limited to: universal multiaccess coverage at extraordinarily high speeds & capacity, multi-tenancy, fixed wireless access network convergence, software controlled, agile service provisioning, on-demand service-oriented resource allocation, highly orchestrated. To meet the needs future...

This paper investigates the applicability of multiple-input-multiple-output (MIMO) technology to broadband fixed wireless access (BFWA) systems operating in 10-66 GHz frequency range. In order employ MIMO principle at these frequencies, spatial channel benefits that may arise from rainfall inhomogeneity are more relevant since multipath is insignificant. Therefore, a special MIMO/BFWA be implemented if every subscriber equipped with multiple antennas and communicates base stations. The exact...

The satellite communication data traffic is increasing dramatically over the coming years. High throughput multibeam networks in Ka band are potentially able to accommodate upcoming high rate demands. However, there only 500 MHz of exclusive for download and same amount upload. This spectrum shortage impose a barrier order satisfy Cognitive considered this paper provide an additional 4.4 GHz bandwidth downlink uplink fixed-satellite-services. In way, it expected that problem scarcity future...