A Wideband Channel Sounder for Car-to-Car Radio Channel Measurements at 5.7 GHz and Results for an Urban Scenario

Paschalidis, Panagiotis; Wisotzki, Mike; Kortke, Andreas; Keusgen, Wilhelm; Peter, Michael

doi:10.1109/vetecf.2008.62

Cited by 28 publications

(18 citation statements)

References 7 publications

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“…Sin embargo las tecnologías MIMO están ganando mucha importancia en los estándares IEEE 802.11 y pueden llegar a ser muy atractivas para los sistemas V2V. Hasta ahora se han realizado pocas campañas de medida [2], [5], [7], [8], [14] conducentes a canales V2V MIMO.…”

Section: B Campañas De Medida En Escenarios Vehicularesunclassified

A survey of channel measurement techniques and narrowband channel parameters for vehicular communications

Fernández

Avella

Campuzano

et al. 2012

2012 IEEE Colombian Communications Conference (COLCOM)

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Propagation characteristics in vehicular radio channels are affected by time-and frequency-selective behavior due to the multipath propagation effect and the movements of the transmitter, the receiver as well as the relevant scatterers. Measurements are vital for the understanding of propagation channels. This article provides an overview of existing vehicular channel measurements. The vehicular channel measurement techniques are briefly described and classified. Furthermore, we review the channel metrics such as path-loss, signal fading and Doppler spread based on the available literature and we summarize and discuss some measurements results of the reported parameters to describe the propagation narrowband channel characteristics in vehicular environments.Index Terms-V2V channels, channel modeling, Doppler spread, vehicular communications. I. INTRODUCCIÓNEl diseño de futuros sistemas de comunicaciones vehiculares ha estado ganando una mayor atención, debido al gran potencial que tienen para mejorar las condiciones de seguridad en las carreteras, teniendo como propósito reducir los accidentes de tráfico y facilitar el flujo vehicular. Los sistemas de transporte inteligente (ITS, Intelligent Transportation Systems), requieren que la conectividad entre las comunicaciones Vehículo a Vehículo (V2V, Vehicle-to-Vehicle) y Vehículo a Infraestructura (V2I, Vehicle-to-Infrastructure) sean confiables. En este sentido se hace necesario un profundo entendimiento de los parámetros que determinan la caracterización del canal de propagación. Asimismo, la naturaleza del desvanecimiento selectivo en tiempo-frecuencia de los canales vehiculares es significativamente diferente de los canales celulares, lo que hace que sean requeridas nuevas campañas de medida y modelos.El canal V2V, difiere del canal de propagación Fijo a Móvil (F2M, Fixed-to-Mobile) en varios aspectos importantes: 1) el entorno de propagación es diferente, 2) el transmisor (Tx) y receptor (Rx) se encuentran a la misma altura y en entornos similares, y 3) la alta movilidad del Tx y Rx como también la de dispersores importantes. Estas diferencias entre canales V2V y F2M hacen que los modelos de canal desarrollados para F2M no puedan ser aplicados para la evaluación de rendimiento y desarrollo de futuras aplicaciones ITS, basadas en sistemas de comunicación vehicular. Es de notar que en la literatura a los sistemas de comunicaciones V2I y V2V se les conoce como sistemas de comunicaciones V2X.El artículo está organizado de la siguiente manera: En la Sección II se realiza una descripción de las técnicas de medida y configuraciones para medir la función de transferencia en canales vehiculares. Igualmente se realiza un breve estado del arte de las campañas de medidas realizadas en estos canales, teniendo en cuenta los parámetros y características relacionadas con los escenarios vehiculares (densidad de tráfico vehicular, naturaleza del enlace, sentido de desplazamientos, distancias de separación entre vehículos). En la Sección III se describen brevemente los parámetros ...

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Section: B Campañas De Medida En Escenarios Vehicularesunclassified

A survey of channel measurement techniques and narrowband channel parameters for vehicular communications

Fernández

Avella

Campuzano

et al. 2012

2012 IEEE Colombian Communications Conference (COLCOM)

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“…The measurements were performed using a revised version of the HHI-Channel-Sounder first introduced in [10]. The HHIChannel-Sounder consists of two mobile stations, the transmitter and the receiver, that are loaded in the rear compartment of passenger vehicles during the measurements.…”

Section: Channel Soundermentioning

confidence: 99%

“…On the receiver side, the received signals are sampled with the use of a digital oscilloscope and downconverted in the digital domain. Further information about the signal structure and the architecture of the HHIChannel-Sounder is provided in [10].…”

Section: Channel Soundermentioning

confidence: 99%

2 X 2 MIMO Measurements of the Wideband Car-to-Car Channel at 5.7 GHz on Urban Street Intersections

Paschalidis

Mahler

Kortke

et al. 2011

2011 IEEE Vehicular Technology Conference (VTC Fall)

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In this paper we present a measurement campaign aimed to identify important radio channel parameters for selected accident situations on urban street intersections. We focus on two scenarios, that yield a significant number of severe urban accidents: Vehicles traveling on perpendicular streets and non-traffic-light-regulated left turn. The measurements were performed in the german capital Berlin by means of the HHI-Channel-Sounder, a true 2 × 2 Multiple Input Multiple Output (MIMO) wideband radio channel sounder operating at a carrier frequency of 5.7 GHz. Having used antennas with a high spatial separation during the measurements, we discuss results for selected measurements regarding the received power at each antenna

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“…A correlative sounder can either be a dedicated device, as in the measurements of Ohio Univ. [6], or it can be constructed from an arbitrary-waveform generator (working as TX), as in the measurements of Carnegie-Mellon University (CMU) [7], Georgiatech [8], Berkeley [9], and HHI [10]. A 50 MHz chiprate is commonly used for VTV measurements (though [9] MIMO sounders can be constructed from wideband sounders by one of two principles: (i) using multiple RF chains at the transmitter and receiver, or (ii) using the switched-array principle.…”

Section: B Measurement Equipmentmentioning

confidence: 99%

Propagation aspects of vehicle-to-vehicle communications - an overview

Molisch

Tufvesson

Karedal

et al. 2009

2009 IEEE Radio and Wireless Symposium

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Abstract-Vehicle-to-vehicle (VTV) wireless communications have many envisioned applications in traffic safety, congestion avoidance, etc., but the development of suitable communications systems and standards requires accurate models for the VTV propagation channel. This paper provides an overview of existing VTV channel measurement campaigns, describing the most important environments, and the delay spread and Doppler spreads obtained in them. Statistical as well as geometry-based channel models have been developed based on measurements and intuitive insights. A key characteristic of VTV channels is the nonstationarity of their statistics, which has major impact on the system performance. Extensive references are provided.I. INTRODUCTION VTV communications systems have recently drawn great attention, because they have the potential to improve convenience and safety of car traffic. For example, sensor-equipped cars that communicate via wireless links and thus build up adhoc networks can be used to reduce traffic accidents and facilitate traffic flow. An international standard, IEEE 802.11p, also known as Wireless Access in Vehicular Environments (WAVE), was recently published.The simulation and performance evaluation of existing systems like IEEE 802.11p, as well as the design of future, improved systems, requires a deep understanding of the underlying propagation channels. However, the time-frequency selective fading nature of such VTV channels is significantly different from the better-explored cellular (base-station to mobile) channel, and thus requires distinct measurement campaigns and models. It is thus gainful to survey the recent progress and current state of the art. This will help the communications system designers to gain an overview of the pertinent channel characteristics, and the propagation researchers to assess where the most pressing needs for further work lie.

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A Wideband Channel Sounder for Car-to-Car Radio Channel Measurements at 5.7 GHz and Results for an Urban Scenario

Cited by 28 publications

References 7 publications

A survey of channel measurement techniques and narrowband channel parameters for vehicular communications

A survey of channel measurement techniques and narrowband channel parameters for vehicular communications

2 X 2 MIMO Measurements of the Wideband Car-to-Car Channel at 5.7 GHz on Urban Street Intersections

Propagation aspects of vehicle-to-vehicle communications - an overview

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