We establish a statistical model for the ultra-wide bandwidth (UWB) indoor channel based on an extensive measurement campaign in typical modern office building with 2-ns delay resolution. The approach is investigation of properties multipath profiles measured different rooms over finely spaced grid. analysis leads to formulation stochastic tapped-delay-line (STDL) UWB channel. averaged power profile can be well-modeled by single exponential decay statistically distributed constant....

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> A comprehensive statistical model is described for ultrawideband (UWB) propagation channels that valid a frequency range from 3–10 GHz. It based on measurements and simulations in the following environments: residential indoor, office builtup outdoor, industrial farm environments, body area networks. The independent of used antennas. includes dependence path gain as well several generalizations...

Cooperative Cyber-Physical Systems (Co-CPSs) can be enabled using wireless communication technologies, which in principle should address reliability and safety challenges. Safety for Co-CPS by technologies is a crucial aspect requires new dedicated design approaches. In this paper, we provide an overview of five use cases, as introduced our SafeCOP EU project, analyze their requirements. Next, comprehensive analysis the main existing giving details about protocols developed within particular...

Abstract Quantum key distribution (QKD) is a secure communication scheme for sharing symmetric cryptographic keys based on the laws of quantum physics, and considered player in realm cyber-security. A critical challenge QKD systems comes from fact that ever-increasing rates at which digital data are transmitted require more performing sources keys, primarily terms secret generation rate. High-dimensional path encoding has been proposed as candidate approach to address this challenge....

We evaluate the link performance of an ultra-wide band (UWB) system using reduced-complexity RAKE receivers, which are based on either partial combining (called PRAKE) or selective SRAKE). The first is suboptimum and combines arriving multipath components, while second strongest components. use a statistical tapped-delay-line channel model that extensive measurement campaigns, reflects both small-scale large-scale variations channel. Through semi-analytical evaluations bit error probability,...

One of the major issues for design ultra-wideband (UWB) receivers is need to recover signal energy dispersed over many multipath components, while keeping receiver complexity low. To this aim we consider two schemes reduced-complexity UWB Rake receivers, both which combine a subset available resolved components. The first method, called partial (PRake), combines theirs/ arriving second known as selective (SRake) and instantaneously strongest We evaluate compare link performance these in...

Abstract This paper investigates the state-of-the-art of graphene-based technologies for prospective use cases end-to-end terahertz (THz) communication systems, such as industrial Internet Things (IoT) applications and unmanned aerial vehicles (UAVs). THz communications offer ultra-high throughput enhanced sensing capabilities, enabling advanced like UAV swarms integrated sensing, localization, mapping. The potential wireless can be unlocked by graphene technology. Graphene, owing to its...

We evaluate a measurement campaign for ultrawideband indoor channels in typical modern office building. show that the power delay profile can be well modeled by single exponential decay with statistically distributed decay-time constant. also analyze path loss, amplitude distribution function, and temporal correlation between adjacent multipath components, give statistical distributions all those parameters. These results form basis of stochastic tapped-delay-line model ultra-wideband channel.

This paper describes a measurement campaign performed in modern building at the University of L'Aquila, Italy. Measurements are taken for two large bands around 60 GHz, i.e. 54-59 and 61-66 GHz. The channel probe is an ultrawideband (UWB) PN-sequence signal having bandwidth 1.2 which up-converted to GHz band finely tuned order span whole mentioned bands. were done several different locations, line-of-sight non-line-of-sight scenarios using combinations transmitting receiving antennas: either...

This paper describes a comprehensive statistical model for UWB propagation channels that is valid frequency range from 3-10 GHz. It based on measurements and simulations in the following environments: residential indoor, office built-up outdoor, industrial farm environments, body area networks. The independent of used antennas. includes dependence pathloss, as well several generalizations Saleh-Valenzuela model, like mixed Poisson times arrival delay dependent cluster decay constants. can...

We have performed a propagation measurement campaign at the University of Rome Tor Vergata, Rome, Italy. sounded channel by probing signal carrier frequency 4.78 GHz modulated train pulses having duration 0.4 ns shaped pseudonoise (PN) sequence. The band falls (3.6-6 GHz) in range allowed FCC ruling for ultrawide-band (UWB) operations. To characterize behavior over large and small scale, transmitter is moved six different positions on floor, while receiver 625 locations within each room. are...

Indoor positioning gained great interest in recent years. Several performance evaluations are available for consolidated systems, especially ultra-wideband radios. Given the current success of mmWaves networks, this paper, we investigate RSSI localization systems operating at mmWaves. Our reference is IEEE 802.11ad standard multi-Gbps WLANs. We tested several scenarios differing number access points serving as anchors and acquisition. results show that still effective using devices compliant...

We present a computer simulator of semiconductor optical amplifiers. The nonlinear input-output response the device is characterized in terms complex gain, representing accumulated gain and wavevector change propagating field across active waveguide. account for saturation induced by stimulated recombination perturbation carrier quasi-equilibrium distribution within bands. A rigorous elimination spatial coordinate allows us to reduce description amplifier dynamics solution set ordinary...

5G targets to offer a huge network capacity support the expected unprecedented traffic growth due mainly mobile and machine-type services. Thus, access has comply with very challenging architectural requirements. Mobile scalability is achieved by playing appropriately centralization of functions applying functional split introducing fronthaul. Although more advantageous in terms management performance optimization, low-layer options require larger bandwidth lower latency be guaranteed...

The city of L'Aquila is one the five Italian cities selected by government to host 5G experimentation. This has specificity being a "living lab", because it currently passing through reconstruction process after earthquake 2009, thus offering "green field" scenario scientific community. led according innovative paradigm "Smart City", whose foundation INCIPICT project (INnovating CIty Planning Information and Communications Technology), described in this paper. Its main focus development an...

The high reliability required by many future-generation network services can be enforced proper resource assignments means of logical partitions, i.e., slices, applied in optical metro-aggregation networks. Different strategies to deploy the virtual functions (VNFs) composing slices over physical nodes, while providing different levels isolation (among slices) and protection against failures, based on several available techniques. Considering that, networks, ensured at layers, slice with...

Towards 6G, a key challenge lies in the placement of virtual network functions on physical resources. This becomes complex due to dynamic nature mobile environments, making design major point research. We propose framework that sees this as and collective process, presenting novel perspective which encompasses transport wireless segment aspects. The is built around an analytical modeling algorithmic tools rely systems' paradigm multiplex networks evolutionary game theory. enables capturing...

Software Defined Converged Access represents a feasible solution to effectively address 5G traffic demands.This paper proposes an integrated mobile-optical control for wavelength and bandwidth allocation.Evaluations of utilization techno-economic viability are provided.

Softwarization of mobile and optical networks facilitates the inter-working between control planes two domains, allowing a more efficient management available resources. Radio resource utilization benefits from centralization network functionalities with application high-order functional split options by fronthauling. However, higher-order require larger bandwidth lower latency in fronthaul. Advanced mechanisms for joint access represent sole solution to support such fronthaul requirements....

We discuss how different degrees of slice isolation influence resource allocation in protected optical metro-aggregation networks. The case reliability with dedicated protection at lightpath is modelled and numerically evaluated.

Network and computing infrastructures are nowadays challenged to meet the increasingly stringent requirements of novel applications. One most critical aspect is optimizing latency perceived by end-user accessing services. New network architectures offer a natural framework for efficient orchestration microservices. However, how incorporate accurate metrics into decisions still represents an open challenge.In this work we propose architectural approach perform scheduling operations in...