Polycystic Ovary Syndrome (PCOS) is a medical condition affecting the female's reproductive system causing ano/oligoovulation, hyperandrogenism, and/or polycystic ovaries. Due to complexities in diagnosing this disorder, it was of upmost importance find solution assist physicians with process. Therefore, study, we investigated possibility building model that aims automate diagnosis PCOS using Machine Learning (ML) algorithms and techniques. In context, dataset consisted 39 features ranging...

In this article, we present a layered radio environment map architecture along with its applications to the self-organizing network functionalities of heterogeneous LTE access networks comprising macrocells and femtocells. architecture, functional blocks reappear different spatial temporal granularity at architectural layers. Although is one key promising technologies enable future cognitive networks, it can be already applied provide limited capabilities today's commercial too. We explain...

Traditional design of wireless networks mainly focuses on system capacity and spectral efficiency. As green networking is an inevitable trend, energy-efficient for future becomes paramount. In this paper, we address resource management in downlink orthogonal frequency division multiple access networks. The focus targeted toward multi-cell networks, which are composed base stations (BSs) sharing the available radio resources. Consequently, greater emphasis given to techniques that take...

Activity patterns of primary users have significant influence on the opportunities for secondary use spectrum. In this paper we explore impact in terms spatial spectrum reuse opportunities. More specifically, model user activity as a Semi-Markov ON/OFF process with varying distributions holding times ON and OFF states. We used realistic time obtained from extensive measurement campaigns. These are combined collection transmitter locations, based real deployed cellular network. Based these,...

In this contribution a layered radio environment map (REM) architecture is designed and applied in the framework of radio-access network optimization for heterogeneous LTE systems that comprise both macrocells femtocells. We define layer as hierarchical representation geographical area. each layer, different instances same architectural block will have spatial/temporal granularities, associated with functionalities. The effectiveness proposed to support functions like automatic neighbor...

In this paper we propose a general model to estimate the maximum allowed transmit power of secondary node based on measured signal from primary transmitter that is willing share its downlink spectrum. The should satisfy constraints related minimum required Signal Interference and Noise Ratio (SINR) users. can be used by nodes whether or not they have full knowledge about correlation between different path losses. Simulation results shown high impact level performance both

In this demonstration we show an approach for constructing radio environment maps from massive data sets. Unlike earlier approaches, the methods used in demonstrator can scale to millions of measurement points, enabling coverage prediction and other spatial estimation problems be solved at country-wide scales. The GUI enables attendees construct different types simulated sets, perform based on those. framework also allows study accuracy obtained estimates, as well computational time required...

The paper investigates the use of Radio Environment Maps (REMs) as a tool for Interference Management (IM) in two-tier cellular networks comprising macro- and femto-cells. REMs are databases that provide, through different instances distributed over network elements, variety network- user-related context information improving IM Resource (RRM) procedures. In this context, focus is to present benefit using REM on practical power control schemes Femtocell downlink transmission co-channel deployment.

In this paper we describe an experimental testbed to empirically study the construction of Radio Environmental Maps (REMs) in indoor environments. The allows investigating characteristics and modeling radio environment for scenarios. deployed system is a network over 80 heterogeneous wireless spectrum sensors with significantly different measurement capabilities office building consisting multiple rooms. As application examples consider two scenarios, one illustrating propagation conditions...

TD-CDMA TDD technique allows UMTS to utilize the bandwidth and rare radio resource more efficiently if dynamic channel allocation is used. This suited especially for systems that offer highly asymmetric services. However, rate of symmetry not same in all cells. Hence, it possible some slots, called crossed a set cells active downlink another uplink. Inter-BS inter-MS interferences arise these slots can degrade dramatically QoS. In this paper, we introduce scheme prevent mobiles very high...

In this paper we propose a heuristic algorithm that exploits additional information can be in general known by secondary network willing to opportunistically access the spectrum allocated primary network. The aims at finding maximum allowed transmission power with which node transmit while respecting constraints. It is designed used presence of multiple transmitters positions but without about their activity patterns. estimation derived using semi-analytical model characterizing interference...

The demand for higher data rates, capacity and better quality-of-service is constantly growing home networks. Therefore, there a pressing need efficient use of wireless network resources. In this context, the application cognitive radio principles that enable nodes to characterize their environment control resources based on acquired knowledge, prominent solution next generation paper we present an architecture prototype implementation these principles. proposed system able autonomously...

Wireless network deployments are becoming increasingly complex in order to cope with the exponential growth mobile data traffic. Multi-tier technologies capable of supporting spatially dense networks enable high rates, but require timely and accurate models radio environment, particularly for scenarios that incorporate dynamic access spectrum. However, planners, algorithm designers, policy makers often forced rely on a small set propagation scenarios, assuming fixed receiver antenna heights...

One of the applications where fifth generation (5G) networks are expected to have a greatest impact is vehicular-to-everything (V2X) communications. The exchange data among different vehicles on network will make roads safer environment. However, massive usage V2X communications leads an increase traffic and resources consumption. Moreover, mobility associated may drain available in particular cells, compromising required quality service (QoS) connected users. To avoid these situations,...

Dynamic time-division duplex (TDD) mode has been suggested to be used in LTE systems for small-sized cells with asymmetric traffic. Despite its flexibility, the TDD suffers from sophisticated interference patterns, i.e. mobile-to-mobile and Base station-to-Base Station interference. In order solve this problem, 3GPP specified a set of methods mitigation traffic adaptation (IMTA). Cell clustering is one these methods, where are organized clusters. Inside each cluster, shall have same frame...

In this paper, we describe the design and implementation of an extensible flexible self-optimization framework for cognitive home networks that employs wireless networking agent-based principles. We provide a "first-principles" derivation its architecture based on careful analysis user requirements (WHNs), state related objectives constraints, address those in context present-day emerging radio platforms. utilize resource manager as individual agents. This serves "constraint de-constrains,"...

The increasing complexity of the future wireless networks leads to requirement for self-organization. This is true especially in home networking where users are typically not professionals and cannot be expected perform complex optimization management tasks. In this context, cognitive radio concept combining cross-layer learning mechanisms a promising solution. We demonstrate prototype, which addresses practical problems face with present-day at home. prototype shows how nodes using IEEE...

Many multimedia services of the next generation mobile telecommunication systems have an asymmetric traffic distribution between uplink and downlink. The combination time division duplexing (TDD) with multiple access (TDMA) technique in Universal Mobile Telecommunications System (UMTS) allows use radio resources due to flexible allocation slots. To conserve this flexibility, downlink slot is preferred be different cells rates asymmetry. Hence, crossed slots where a set are active another...

Wireless technologies are rapidly evolving to allow operators deliver more advanced multimedia services. High-speed packet access (HSPA) for uplink and downlink is seen as an intermediate evolutionary step since the first wave of wideband code division multiple (WCDMA)-based networks rollout, while evolved universal mobile telecommunications system (UMTS) terrestrial radio (E-UTRAN) long term perspective Third Generation Partnership Project (3GPP) technology family. Similar paths drawn from...

This article presents a shadowing simulation model based on multiple-edge diffraction. Such provides an appropriate tool for simulating in cases where over-obstacle diffraction is the main propagation mechanism. Results show that good agreement with literature terms of its statistical parameters. Moreover, capability dealing variations antenna height makes it wide range wireless systems.

Cognitive Radios have emerged as one the most promising methods to increase wireless system efficiency through dynamic spectrum access combined with other cross-layer optimization methods. Most of research prototypes and demonstrations so far focused on either general platforms or scenarios that are predominantly taken from military emergency communications domain. In this demonstration we show prototype environment is build around realistic home networking scenarios. The has two purposes....

Connected and Automated Mobility (CAM) Future Railway Mobile Communications System (FRMCS) use cases present strict requirements in terms of service end-to-end latencies, data rates, reliability availability, posing challenges the design 5G network architectures for cross- border scenarios, where current roaming mechanisms introduce large latencies disruption times. The EU-funded Horizon 2020 5GMED project proposes a novel architecture Mediterranean corridor cross-border between Spain...