Advanced Television Systems Committee (ATSC) 3.0, the new generation digital terrestrial television standard, has been designed for facing challenges of future broadcasting systems. ATSC 3.0 built using most recent cutting-edge technologies. Layered division multiplexing (LDM) is one major components system baseline. LDM provides a tool to make flexible use spectrum delivering simultaneous services stationary and mobile services. This paper presents performance evaluation core in scenarios...

The recent increase in reported incidents of security breaches compromising users' privacy call into question the current centralized model which third-parties collect and control massive amounts personal data. Blockchain has demonstrated that trusted auditable computing is possible using a decentralized network peers accompanied by public ledger. Furthermore, Homomorphic Encryption (HE) guarantees confidentiality not only on computation but also transmission, storage processes. synergy...

This paper presents a generic methodology to optimize constellations based on their geometrical shaping for bit-interleaved coded modulation (BICM) systems. While the method can be applicable any wireless standard design it has been tailored two delivery scenarios typical of broadcast systems: 1) robust multimedia and 2) UHDTV quality bitrate services. The process is maximizing BICM channel capacity given power constraint. major contribution this low complexity optimization algorithm optimal...

At the confluence of two great paradigms such as Edge Computing and Artificial Intelligence, Intelligence arises. This new concept is about smart exploitation by bringing together reasoning learning algorithms sensors/actuators computing capabilities. Security third paradigm that must join team in order to have resilient reliable systems be used real-world applications use cases. Hence, smartness is, this context, a puzzle several independent pieces which, once fitted, can derived...

The Industry 4.0 paradigm alludes to a new industrial revolution where factories evolve towards digitalized and networked structures intelligence is spread among the different elements of production systems. Two key technological enablers achieve flexibility efficiency sought for future are communication networks data management schemes that will support connectivity distribution in Cyber-Physical Production Systems. Communications must be built upon flexible reliable architecture able...

Audit logs are a critical component in today’s enterprise business systems as they provide several benefits such records transparency and integrity security of sensitive information by creating layer evidential support. However, current implementations vulnerable to attacks on data or availability. This paper presents Blockchain-based audit trail mechanism that leverages the features Blockchain enable secure reliable trails address aforementioned vulnerabilities. The architecture design...

Two of the main drawbacks current broadcasting services are, on one hand, lack flexibility to adapt new generation systems requirements, and other incapability taking a piece mobile market. In this paper, layered division multiplexing (LDM), which grew out concept Cloud Txn, is presented as very promising technique for answering those challenges enhancing capacity systems. The major contribution paper present first comprehensive study LDM performance behavior. particular, in theoretical...

This paper presents the field trials carried out in Bilbao (Spain) for testing and analyzing performance of DVB-T2 indoor (fixed pedestrian) reception. Test services with different T2-Lite configuration modes have been broadcasted measurements out. As a result, signal to noise ratio threshold values reception obtained. These update those provided by previous studies are also valid planning tools be used broadcasters development networks.

The IoT-as-a-Service (IoTaaS) business model has already been identified by some people from both industry and academia, but not formally defined. IoTaaS offers IoT devices on demand, with considerable cost savings resource optimization. In addition, it enables different applications to reuse the existing devices. However, this is associated technological challenges that need be addressed, one of which identity problem. Focusing this, self-sovereign (SSI) schemes have proven provide better...

This paper presents a study that combines LDM (Layer Division Multiplexing) and SHVC (Scalable High Efficiency Video Coding) techniques to offer HD/UHD TV services in indoor scenarios. First, theoretical of the optimal configuration parameters for signal (such as constellation, code-rate injection level) reception will be presented. Next, results some laboratory measurements testing performance scenarios included. For this purpose, TU6, PI, IOA IOB channel models considered, being main...

Cloud-Txn is a new broadcasting approach, which proposes the usage of layer-division-multiplexing (LDM) to meet requirements generation digital TV services. Cloud Txn has been proposed as one candidate technologies for Next Generation DTV systems. This technology considered an attractive alternative commonly used Time Division (TDM) and Frequency (FDM) multiplexing. Its main advantage lies in being more efficient RF channel continuously both time frequency, while flexibility each layer...

As the global population continues to grow, enormous stress on our environment and resources is becoming impossible ignore. A focus producing consuming as cheap possible has created an economy in which objects are briefly used then discarded waste, featuring a linear lifecycle that creates amount of waste. The alternative "take-make-waste" called "circular economy". Under this paradigm, materials recycled build new products or components designed built promote their reuse refurbishment. This...

Non uniform constellations have been recently included in the new terrestrial broadcasting system ATSC 3.0, providing better performance than ones. However, for high order constellations, complexity demapper grows as number of constellation points do, being necessary to reduce degrees freedom design process. The goal this paper is present a set optimal non which provide higher gain ones proposed 3.0 with low demapping complexity.

In addition to the traditional TDM/FDM, advanced television systems committee (ATSC) 3.0 next generation digital TV standard has adopted state-of-the-art coding and modulation, as well new layered division multiplexing (LDM) technology. The ATSC system is able provide higher data throughput, more robust reception, better spectrum efficiency, flexible service combinations in one RF channel with different robustness reception conditions. Due adoption of a two-layer LDM, coverage for very from...

Uniform quadrature amplitude modulation (QAM) has been widely used in terrestrial broadcasting systems because it provides a high data rate although is less resilient to noise and interference. However, the uniform pattern of constellation points doesn't provide highest BICM capacity so degree non uniformity needed as improve system. On other hand, due difficulty some propagation scenarios applications signal space diversity (SSD) techniques could increase robustness The goal this paper...

This paper presents the field trials carried out inside Barcelona Exhibition Centre (Spain) for testing DVB-T2 portable reception in indoor environments. A key point of these is ability to measure different configurations at once, due new T2-Lite profile standardized April 2012. allows simultaneous transmission two completely T2 profiles a mixed mode using Future Extension Frame (FEF) capability. For this paper, modes have been measured and results will show their performance scenario,...

Two-dimensional non-uniform constellations (2D-NUC) have been adopted for the most recent terrestrial broadcasting system called ATSC 3.0. They are known being more efficient than one-dimensional non uniform (1D-NUC) and (UC). can be used in any communication with bit-interleaved coded modulation (BICM) structure. However, one of main challenges such is their design optimal behaviour a wide range cases demapper that exploits advantages. This paper presents two different condensation...

This paper presents the performance study of interleavers defined in ATSC 3.0 physical layer. It must be noted that for single PLP configurations convolutional time interleaving and frequency can used. Nevertheless, when multiple are used, cell interleaving, block subslicing also included. The influence on reception will tested stationary, pedestrian mobile scenarios. main objective this is to measure required signal noise ratio (SNR) threshold an error-free with without interleavers. In...

In the DVB-T2 digital terrestrial television standard a transmitter signature can be included in order to provide unique identification each of transmitters network. This feature is optional and it exploited for many other applications. For instance, very valuable tool broadcasters intending bring new single frequency network onto air or troubleshooting that was already working. physical layer standard, couple options are provided, operators ones should select solution copes better with...

Delivering local content in terrestrial digital TV (DTV) single-frequency-networks (SFNs) is of great interest to broadcasters, which can support business cases such as news, location-based applications and targeted advertisements. The recently adopted Layered-Division-Multiplexing (LDM) technology offers a new solution achieve high-throughput insertion from any transmitters, at anytime, with flexible coverage areas. To the services delivered using LDM, receivers need estimate specific...

The limitations and rigidness of current use spectrum resources have fostered the design new power multiplexing techniques to improve frequency efficiency flexibility. These are based on simultaneous transmission different services same channel with distribution. At receiver side Log-likelihood ratio (LLR) probability density functions been so far optimized for single layer systems, reception quality multilayer signals existing LLR algorithms is degraded. This paper proposes a function,...

The ATSC 3.0 next generation digital TV standard adopts state-of-the-art coding and modulation, as well the new Layered Division Multiplexing (LDM) technology in addition to traditional TDM/FDM. It is a very flexible system capable of combining different services one RF channel with robustness reception conditions. coverage for from legacy one-tower-one-coverage 1.0 system. With enabling technologies, can greatly increase coverage/service areas, reduce distance between co-channel...

This paper presents a platform for carrying out advanced DVB-T2 system performance measurements in flexible way. The is based on software receiver with boosted achieved by using both cluster computing and GPU processing. IQ samples of the received signals can be recorded lab or during field trials offline analysis this platform. methodology has been tested three different measurement campaigns results obtained are analyzed last section paper.