Shadow fading cross-correlation of multi-frequencies in curved subway tunnels

Radio propagation characteristics in curved tunnels are important for designing reliable communications in subway systems. In this paper, shadow fading is characterized, and cross-correlation property of shadow fading for different frequency bands is investigated based on empirical measurements. The measurements were conducted in two types of curved subway tunnels with 300 m and 500 m radii of curvatures at 980 MHz, 2400 MHz, and 5705 MHz, respectively. The impact of antenna polarization and propagation environment on shadow fading correlation at the receiver is evaluated. It is found that shadow fading with horizontal polarized antenna exhibits less correlation than with vertical polarized antenna. Strong independence of shadowing correlation and tunnel type is observed. Furthermore, a heuristic explanation of the particular shadowing correlation property in subway tunnel is presented

Measurements and analysis of large-scale fading characteristics in curved subway tunnels at 920 MHz, 2400 MHz, and 5705 MHz

ave propagation characteristics in curved tunnels are of importance for designing reliable communications in subway systems. This paper presents the extensive propagation measurements conducted in two typical types of subway tunnels—traditional arched “Type I” tunnel and modern arched “Type II” tunnel—with300- and 500-m radii of curvature with different configurations—horizontal and vertical polarizations at 920, 2400, and 5705 MHz, respectively. Based on the measurements, statistical metrics of propagation loss and shadow fading (path-loss exponent, shadow fading distribution, autocorrelation, and cross-correlation) in all the measurement cases are extracted. Then, the large-scale fading characteristics in the curved subway tunnels are compared with the cases of road and railway tunnels, the other main rail traffic scenarios, and some “typical” scenarios to give a comprehensive insight into the propagation in various scenarios where the intelligent transportation systems are deployed. Moreover, for each of the large-scale fading parameters, extensive analysis and discussions are made to reflect the physical laws behind the observations. The quantitative results and findings are useful to realize intelligent transportation systems in the subway system

Measurement and analysis of extra propagation loss of tunnel curve

Wave propagation experiences extra loss in curved tunnels, which is highly desired for network planning. Extensive narrow-band propagation measurements are made in two types of Madrid subway tunnels (different cross sections and curvatures) with various configurations (different frequencies and polarizations). A ray tracer validated by the straight and curved parts of the measuring tunnels is employed to simulate the reference received signal power by assuming the curved tunnel to be straight. By subtracting the measured received power in the curved tunnels from the simulated reference power, the extra loss resulting from the tunnel curve is extracted. Finally, this paper presents the figures and tables quantitatively reflecting the correlations between the extra loss and radius of curvature, frequency, polarization, and cross section, respectively. The results are valuable for statistical modeling and the involvement of the extra loss in the design and network planning of communication systems in subway tunnels

Propagation, Localization and Navigation in Tunnel-like Environments

La robótica de servicio, entendida como aquella destinada al uso de uno o varios robots con fines de, por ejemplo, vigilancia, rescate e inspecciones, ha ido tomando cada vez más relevancia en los últimos años. Debido a los grandes avances en las distintas áreas de la robótica, los robots han sido capaces de ejecutar satisfactoriamente tareas que resultan peligrosas o incluso imposibles para los humanos, en diversos entornos. Entre ellos, los entornos confinados como túneles, minas y tuberías, han atraído la atención en aplicaciones relacionadas con transporte ferroviario, redes vehiculares, búsqueda y rescate, y vigilancia, tanto en el ámbito civil como militar. En muchas tareas, la utilización de varios robots resulta más provechoso que utilizar sólo uno. Para cooperar, los robots deben intercambiar información sobre el entorno y su propio estado, por lo que la comunicación entre ellos resulta crucial. Debido a la imposibilidad de utilizar redes cableadas entre robots móviles, se despliegan redes inalámbricas. Para determinar la calidad de señal entre dos robots, inicialmente se utilizaban modelos de propagación basados únicamente en la distancia entre ellos. Sin embargo, estas predicciones sólo resultan útiles en exteriores y sin la presencia de obstáculos, que sólo componen una pequeña parte de los escenarios de la robótica de servicio. Mas aún, la naturaleza altamente multi-trayecto de la propagación electromagnética en túneles hace que éstos actúen como guías de onda para cierto rango de frecuencias, extendiendo considerablemente el alcance de comunicación en comparación con entornos exteriores. Sin embargo, la señal se ve afectada con profundos desvanecimientos (llamados fadings en inglés). Esto los convierte en un reto para la robótica que considera la comunicación entre robots como fundamental. Además, la naturaleza hostil de estos entornos, así como también la falta de características visuales y estructurales, dificultan la localización en estos escenarios, cuestión que resulta fundamental para ejecutar con éxito una tarea con un robot. Los métodos de localización utilizados en interiores, como aquellos basados en SLAM visual, resultan imprecisos por la falta de características distintivas para cámaras o lásers, mientras que los sensores utilizados en exteriores, como el GPS, no funcionan dentro de túneles o tuberías. En esta tesis abordamos problemas fundamentales para la robótica con el fin de proporcionar herramientas necesarias para la exploración con robots en entornos tipo túnel, manteniendo la conectividad de la red de comunicaciones formada por varios robots y una estación base. Para ello, primeramente caracterizamos, en términos de propagación, los dos escenarios tipo túnel más comunes: un túnel de hormigón y una tubería metálica. Hacemos énfasis en el fenómeno de los fadings, ya que son el problema más importante a considerar para mantener la comunicación. Posteriormente presentamos una estrategia de navegación para desplegar un equipo de robots en un túnel, lidiando con los fadings para mantener la conectividad de la red formada por los robots. Esta estrategia ha sido validada a través de numerosos experimentos realizados en un túnel real, el túnel de Somport. Luego, abordamos el problema de la localización, proponiendo e implementando una técnica que permite estimar la posición de un robot dentro de una tubería, basada en la periodicidad de los fadings. El método es validado a través de experimentos reales en tuberías de pequeña y grandes dimensiones. Finalmente, proponemos esquemas de diversidad espacial, de forma que se facilita la navegación mientras se mejora la localización.Deploying a team of robots for search and rescue, inspection, or surveillance, has increasingly gained attention in the last years. As a result of the advances in several areas of robotics, robots have been able to successfully execute tasks that are hazardous or even impossible for humans in a variety of scenarios, such as outdoors, indoors, or even underground. Among these scenarios, tunnel-like environments (such as tunnels, mines, or pipes) have attracted attention for train applications, vehicular networks, search and rescue, and even service and surveillance missions in both military and civilian contexts. In most of the tasks, utilizing a multi-robot team yields better results than a singlerobot system, as it makes the system more robust while reducing the time required to complete tasks. In order to cooperate, robots must exchange information about their current state and the surrounding environment, making communication between them a crucial task. However, due to the mobile nature of robots used for exploration, a wired architecture is not possible nor convenient. Instead, a wireless network is often deployed. Wireless propagation in tunnel-like environments, characterized for the presence of strong fading phenomena, differs from regular indoor and outdoor scenarios, posing multiple challenges for communication-aware robotics. In addition, accurate localization is a problem in environments such as tunnels or pipes. These environments generally lack distinctive visual and/or structural features and are longer than they are wide in shape. Standard indoor localization techniques do not perform well in pipelines or tunnels given the lack of exploitable features, while outdoor techniques (GPS in particular) do not work in these scenarios. In this thesis, we address basic robotics-related problems in order to provide some tools necessary for robotics exploration in tunnel-like scenarios under connectivity constraints. In the first part, we characterize, in terms of propagation, two of the most common tunnel-like environments: a pipe and a tunnel. We emphasize the spatial-fadings phenomena, as it is one of the most relevant issues to deal with, in a communications context. Secondly, we present a navigation strategy to deploy a team of robots for tunnel exploration, in particular maintaining network connectivity in the presence of these fadings. Several experiments conducted in a tunnel allow us to validate the connectivity maintenance of the system. Next, we address the localization problem and propose a technique that uses the periodicity of the fadings to estimate the position of the robots from the base station. The method is validated in small-scale and large-scale pipes. Finally, we propose spatial diversity schemes in order to ease the navigation while improving the localization

UHF propagation channel characterization for tunnel microcellular and personal communications.

by Yue Ping Zhang.Publication date from spine.Thesis (Ph.D.)--Chinese University of Hong Kong, 1995.Includes bibliographical references (leaves 194-200).DEDICATIONACKNOWLEDGMENTSChapterChapter 1. --- Introduction --- p.1Chapter 1.1 --- Brief Description of Tunnels --- p.1Chapter 1.2 --- Review of Tunnel Imperfect Waveguide Models --- p.2Chapter 1.3 --- Review of Tunnel Geometrical Optical Model --- p.4Chapter 1.4 --- Review of Tunnel Propagation Experimental Results --- p.6Chapter 1.5 --- Review of Existing Tunnel UHF Radio Communication Systems --- p.13Chapter 1.6 --- Statement of Problems to be Studied --- p.15Chapter 1.7 --- Organization --- p.15Chapter 2 --- Propagation in Empty Tunnels --- p.18Chapter 2.1 --- Introduction --- p.18Chapter 2.2 --- Propagation in Empty Tunnels --- p.18Chapter 2.2.1 --- The Imperfect Empty Straight Rectangular Waveguide Model --- p.19Chapter 2.2.2 --- The Hertz Vectors for Empty Straight Tunnels --- p.20Chapter 2.2.3 --- The Propagation Modal Equations for Empty Straight Tunnels --- p.23Chapter 2.2.4 --- The Propagation Characteristics of Empty Straight Tunnels --- p.26Chapter 2.2.5 --- Propagation Numerical Results in Empty Straight Tunnels --- p.30Chapter 2.3 --- Propagation in Empty Curved Tunnels --- p.36Chapter 2.3.1 --- The Imperfect Empty Curved Rectangular Waveguide Model --- p.37Chapter 2.3.2 --- The Hertz Vectors for Empty Curved Tunnels --- p.39Chapter 2.3.3 --- The Propagation Modal Equations for Empty Curved Tunnels --- p.41Chapter 2.3.4 --- The Propagation Characteristics of Empty Curved Tunnels --- p.43Chapter 2.2.5 --- Propagation Numerical Results in Empty Curved Tunnels --- p.47Chapter 2.4 --- Summary --- p.50Chapter 3 --- Propagation in Occupied Tunnels --- p.53Chapter 3.1 --- Introduction --- p.53Chapter 3.2 --- Propagation in Road Tunnels --- p.53Chapter 3.2.1 --- The Imperfect Partially Filled Rectangular Waveguide Model --- p.54Chapter 3.2.2 --- The Scalar Potentials for Road tunnels --- p.56Chapter 3.2.3 --- The Propagation Modal Equations for Road Tunnels --- p.59Chapter 3.2.4 --- Propagation Numerical Results in Road Tunnels --- p.61Chapter 3.3 --- Propagation in Railway Tunnels --- p.64Chapter 3.3.1 --- The Imperfect Periodically Loaded Rectangular Waveguide Model --- p.65Chapter 3.3.2 --- The Surface Impedance Approximation --- p.66Chapter 3.3.2.1 --- The Surface Impedance of a Semi-infinite Lossy Dielectric Medium --- p.66Chapter 3.3.2.2 --- The Surface Impedance of a Thin Lossy Dielectric Slab --- p.67Chapter 3.3.2.3 --- The Surface Impedance of a Three-layered Half Space --- p.69Chapter 3.3.2.4 --- The Surface Impedance of the Sidewall of a Train in a Tunnel --- p.70Chapter 3.3.3 --- The Hertz Vectors for Railway Tunnels --- p.71Chapter 3.3.4 --- The Propagation Modal Equations for Railway Tunnels --- p.73Chapter 3.3.5 --- The Propagation Characteristics of Railway Tunnels --- p.76Chapter 3.3.6 --- Propagation Numerical Results in Railway Tunnels --- p.78Chapter 3.4 --- Propagation in Mine Tunnels --- p.84Chapter 3.4.1 --- The Imperfect periodically Loaded Rectangular Waveguide Model --- p.85Chapter 3.4.2 --- The Hertz Vectors for Mine Tunnels --- p.86Chapter 3.4.3 --- The Propagation modal Equations for Mine Tunnels --- p.88Chapter 3.4.4 --- The Propagation Characteristics of Mine Tunnels --- p.95Chapter 3.4.5 --- Propagation Numerical Results in Mine Tunnels --- p.96Chapter 3.5 --- Summary --- p.97Chapter 4 --- Statistical and Deterministic Models of Tunnel UHF Propagation --- p.100Chapter 4.1 --- Introduction --- p.100Chapter 4.2 --- Statistical Model of Tunnel UHF Propagation --- p.100Chapter 4.2.1 --- Experiments --- p.101Chapter 4.2.1.1 --- Experimental Set-ups --- p.102Chapter 4.2.1.2 --- Experimental Tunnels --- p.104Chapter 4.2.1.3 --- Experimental Techniques --- p.106Chapter 4.2.2 --- Statistical Parameters --- p.109Chapter 4.2.2.1 --- Parameters to Characterize Narrow Band Radio Propagation Channels --- p.109Chapter 4.2.2.2 --- Parameters to Characterize Wide Band Radio Propagation Channels --- p.111Chapter 4.2.3 --- Propagation Statistical Results and Discussion --- p.112Chapter 4.2.3.1 --- Tunnel Narrow Band Radio Propagation Characteristics --- p.112Chapter 4.2.3.1.1 --- Power Distance Law --- p.114Chapter 4.2.3.1.2 --- The Slow Fading Statistics --- p.120Chapter 4.2.3.1.3 --- The Fast Fading Statistics --- p.122Chapter 4.2.3.2 --- Tunnel Wide Band Radio Propagation Characteristics --- p.125Chapter 4.2.3.2.1 --- RMS Delay Spread --- p.126Chapter 4.2.3.2.2 --- RMS Delay Spread Statistics --- p.130Chapter 4.3 --- Deterministic Model of Tunnel UHF Propagation --- p.132Chapter 4.3.1 --- The Tunnel Geometrical Optical Propagation Model --- p.134Chapter 4.3.2 --- The Tunnel Impedance Uniform Diffracted Propagation Model --- p.141Chapter 4.3.2.1 --- Determination of Diffraction Points --- p.146Chapter 4.3.2.2 --- Diffraction Coefficients for Impedance Wedges --- p.147Chapter 4.3.3 --- Comparison with Measurements --- p.151Chapter 4.3.3.1 --- Narrow Band Comparison of Simulated and Measured Results --- p.151Chapter 4.3.3.1.1 --- Narrow Band Propagation in Empty Straight Tunnels --- p.151Chapter 4.3.3.1.2 --- Narrow Band Propagation in Curved or Obstructed Tunnels --- p.154Chapter 4.3.3.2 --- Wide Band Comparison of Simulated and Measured Results --- p.158Chapter 4.3.3.2.1 --- Wide Band Propagation in Empty Straight Tunnels --- p.159Chapter 4.3.3.2.2 --- Wide Band Propagation in an Obstructed Tunnel --- p.163Chapter 4.4 --- Summary --- p.165Chapter 5 --- Propagation in Tunnel and Open Air Transition Region --- p.170Chapter 5.1 --- Introduction --- p.170Chapter 5.2 --- Radiation of Radio Waves from a Rectangular Tunnel into Open Air --- p.171Chapter 5.2.1 --- Radiation Formulation Using Equivalent Current Source Concept --- p.171Chapter 5.2.2 --- Radiation Numerical Results --- p.175Chapter 5.3 --- Propagation Characteristics of UHF Radio Waves in Cuttings --- p.177Chapter 5.3.1 --- The Attenuation Constant due to the Absorption --- p.178Chapter 5.3.2 --- The Attenuation Constant due to the Roughness of the Sidewalls --- p.182Chapter 5.3.3 --- The Attenuation Constant due to the tilts of the Sidewalls --- p.183Chapter 5.3.4 --- Propagation Numerical Results in Cuttings --- p.184Chapter 5.4 --- Summary --- p.187Chapter 6 --- Conclusion and Recommendation for Future Work --- p.189APPENDIX --- p.193The Approximate Solution of a Transcendental Equation --- p.193REFERENCES --- p.19

Mobile and Wireless Communications

Mobile and Wireless Communications have been one of the major revolutions of the late twentieth century. We are witnessing a very fast growth in these technologies where mobile and wireless communications have become so ubiquitous in our society and indispensable for our daily lives. The relentless demand for higher data rates with better quality of services to comply with state-of-the art applications has revolutionized the wireless communication field and led to the emergence of new technologies such as Bluetooth, WiFi, Wimax, Ultra wideband, OFDMA. Moreover, the market tendency confirms that this revolution is not ready to stop in the foreseen future. Mobile and wireless communications applications cover diverse areas including entertainment, industrialist, biomedical, medicine, safety and security, and others, which definitely are improving our daily life. Wireless communication network is a multidisciplinary field addressing different aspects raging from theoretical analysis, system architecture design, and hardware and software implementations. While different new applications are requiring higher data rates and better quality of service and prolonging the mobile battery life, new development and advanced research studies and systems and circuits designs are necessary to keep pace with the market requirements. This book covers the most advanced research and development topics in mobile and wireless communication networks. It is divided into two parts with a total of thirty-four stand-alone chapters covering various areas of wireless communications of special topics including: physical layer and network layer, access methods and scheduling, techniques and technologies, antenna and amplifier design, integrated circuit design, applications and systems. These chapters present advanced novel and cutting-edge results and development related to wireless communication offering the readers the opportunity to enrich their knowledge in specific topics as well as to explore the whole field of rapidly emerging mobile and wireless networks. We hope that this book will be useful for students, researchers and practitioners in their research studies

Wave Propagation

A wave is one of the basic physics phenomena observed by mankind since ancient time. The wave is also one of the most-studied physics phenomena that can be well described by mathematics. The study may be the best illustration of what is “science”, which approximates the laws of nature by using human defined symbols, operators, and languages. Having a good understanding of waves and wave propagation can help us to improve the quality of life and provide a pathway for future explorations of the nature and universe. This book introduces some exciting applications and theories to those who have general interests in waves and wave propagations, and provides insights and references to those who are specialized in the areas presented in the book

Diseño y evaluación de nuevas formas e onda para comunicaciones de alta movilidad

Programa Oficial de Doutoramento en Tecnoloxías da Información e Comunicación en Redes Móbiles. 553V01[Resumo] Os servizos multimedia e de datos experimentaron un crecemento continuo nos últimos anos e espérase que crezan aínda máis nos anos seguintes. A xente está a usar cada vez máis os seus dispositivos móbiles para acceder a servizos baseados en datos para fins relacionados co traballo, entretemento ou socialización en liña. Ademais, as comunicacións masivas de tipo máquina tamén están en ascenso (por exemplo, as comunicacións en transporte e loxística, sensores, Internet das cousas, etc.), e serán moi importantes para a nova xeración de sistemas de comunicacións sen fíos. Para afrontar o aumento esperado no uso de servizos multimedia e baseado en datos, así como para soportar novos casos de uso que hoxe non son posibles, unha nova xeración de redes sen fíos é necesaria. Para iso, espérase que os sistemas de comunicación sen fíos 5G traian as melloras necesarias: maiores taxas de datos, baixas latencias, mellor eficiencia enerxética, alta fiabilidade, etc. O coñecemento das características da canle sen fíos é fundamental para a planificación das redes de comunicación sen fíos e o deseño de transceptores. Como primeiro paso, centramos este traballo na caracterización completa da canle para diferentes escenarios, como son os trens de alta velocidade, metro e comunicacións vehículo a infraestrutura en estradas. A canle caracterizouse mediante a avaliación da relación sinal a ruído, a perda de traxecto (path loss) e os chamados parámetros condensados da canle (por exemplo, o factor K, o perfil potencia-retardo (power delay profile) e a densidade espectral de potencia Doppler. Ademais, para a nova interface aérea das redes 5G, unha das principais cuestións foi a forma de onda a usar. Finalmente, o 3rd Generation Partnership Project (3GPP) decidiu usar a tecnoloxía de multiplexación por división de frecuencias ortogonais (OFDM polas súas siglas en inglés). Isto semella unha elección natural debido ás moitas vantaxes de OFDM e que tamén é a técnica de modulación empregada nas redes 4G. Con todo, nos últimos anos, esquemas multiportadora baseados en bancos de filtros (FBMC polas súas siglas en inglés) recibiron unha grande atención como alternativa a OFDM debido ás súas vantaxes: non utilizan un prefixo cíclico (proporcionan unha maior eficiencia espectral), os usuarios non precisan ser sincronizados no enlace ascendente, e un mellor rendemento teórico en contornas de alta velocidade debido a unha menor interferencia entre portadoras. Neste traballo comparamos experimentalmente o rendemento de FBMC e OFDM en contornas de alta velocidade. Tamén analizamos o rendemento de FBMC e OFDM no caso de uso práctico dun vehículo aéreo lixeiro pilotado remotamente. A maior parte do traballo realizado nesta tese requiriu o deseño e desenvolvemento do chamado GTEC 5G Simulator, que foi usado en conxunto co GTEC Testbed para realizar a maior parte das campañas de medicións e avaliacións de rendemento mediante transmisións polo aire.[Resumen] Los servicios multimedia y basados en datos experimentaron un crecimiento sin interrupciones en los últimos años, y se espera que crezcan aún más en los años siguientes. Las personas utilizan cada vez más sus dispositivos móviles para acceder a los servicios basados en datos con fines relacionados con el trabajo, el entretenimiento o la socialización en línea. Además, las comunicaciones masivas de tipo máquina también están en aumento (por ejemplo, comunicaciones en transporte y logística, sensores, Internet de las cosas, etc.) y serán muy importantes para la nueva generación de sistemas de comunicaciones inalámbricos. Para hacer frente al aumento esperado en el uso de servicios multimedia y basados en datos, así como para soportar nuevos casos de uso que no son posibles hoy en día, se requiere una nueva generación de sistemas inalámbricos. Para esto, se espera que los sistemas de comunicación inalámbrica 5G aporten las mejoras necesarias: mayores tasas de datos, menores latencias, mejor eficiencia energética, alta fiabilidad, etc. El conocimiento de las características del canal inalámbrico es fundamental para la planificación de redes de comunicación inalámbricas y el diseño de transceptores. Como primer paso, centramos este trabajo en la caracterización completa del canal para diferentes escenarios, tales como trenes de alta velocidad, metro y comunicaciones vehículo a infraestructura en carreteras. El canal se caracterizó por medio de la evaluación de la relación señal a ruido, la pérdida de trayecto (path loss) y los llamados parámetros condensados de canal (por ejemplo, el factor K, el perfil potencia-retardo (power delay profile) y la densidad espectral de potencia Doppler). Además, para la nueva interfaz aérea de las redes 5G, una de las preguntas principales ha sido la forma de onda a usar. Finalmente, el 3rd Generation Partnership Project (3GPP) decidió usar la tecnología de multiplexación por división de frecuencias ortogonales (OFDM por sus siglas en inglés). Esta es una elección lógica, debido a las muchas ventajas exhibidas por OFDM y dado que también es la técnica de modulación empleada en las redes 4G. Sin embargo, en los últimos años, los esquemas multiportadora basados en bancos de filtros (FBMC por sus siglas en inglés) han recibido una gran atención como una alternativa a OFDM debido a sus ventajas: no usan un prefijo cíclico (lo que proporciona una mayor eficiencia espectral), los usuarios no necesitan sincronizarse en el enlace ascendente, y un mejor rendimiento teórico en escenarios de alta velocidad debido a una menor interferencia entre subportadoras. En este trabajo comparamos experimentalmente el rendimiento de FBMC y OFDM en entornos de alta velocidad. También analizamos el rendimiento de FBMC y OFDM en el caso de uso práctico de un vehículo aéreo ligero tripulado remotamente. La mayor parte del trabajo llevado a cabo en esta tesis requirió el diseño y desarrollo del denominado GTEC 5G Simulator, que se utilizó junto con el GTEC Testbed para realizar la mayoría de las campañas de medidas y evaluaciones de rendimiento por medio de transmisiones por aire.[Abstract] Multimedia and data-based services experienced a non-stopping growth over the last few years and are expected to grow even more in the following years. People are using more and more their mobile devices to access data-based services for work-related purposes, entertainment or online socialization. Moreover, massive machine-type communications are also on the rise (e.g., transport and logistics communications, sensors, Internet of Things, etc.), and will be very important for the new generation of wireless communication systems. To cope with the expected increase in the usage of multimedia and data-based services, as well as to support new use cases which are not possible today, a new generation of wireless systems is required. For this, 5G wireless communication systems are expected to bring the necessary improvements: higher data rates, lower latencies, better energy efficiency, high reliability, etc. Knowledge of the wireless channel characteristics is fundamental for the planning of wireless communication networks and transceivers design. As a first step, this work centered in the channel characterization for different scenarios such as high-speed trains, subways, and vehicle-to-infrastructure in roads. The channel was characterized by means of assessing the signal-to-noise ratio, the path loss, and the so-called channel condensed parameters (e.g., the K-factor, the power delay profile, and the Doppler power spectral density). Moreover, for the new air interface of 5G networks, one of the main questions was the waveform to be used. Finally, the 3rd Generation Partnership Project (3GPP) decided to use orthogonal frequencydivision multiplexing (OFDM). This seems a natural choice due to the many advantages exhibited by OFDM and it is also the modulation technique employed by 4G networks. However, over the last few years, schemes based on filter bank multicarrier (FBMC) using quadrature amplitude modulation have received a great attention as an alternative to OFDM due to their advantages: they do not use a cyclic prefix (thus providing a higher bandwidth efficiency), users do not need to be synchronized in the uplink, and they achieve a theoretical better performance in high-speed scenarios due to a lower inter-carrier interference. In this work, we have experimentally compared the performance of FBMC versus OFDM in high-speed scenarios. We have also analyzed the performance of FBMC versus OFDM in the practical use case of a lightweight remotely piloted aircraft. The majority of the work carried out in this thesis required the design and development of the so-called GTEC 5G Simulator, which was used in conjunction with the GTEC Testbed to perform most of the measurement campaigns and performance evaluations by means of over-the-air transmissions