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Sunday, July 5, 2020 | History

2 edition of Measured vehicular antenna performance found in the catalog.

Measured vehicular antenna performance

Ramon L Jesch

Measured vehicular antenna performance

by Ramon L Jesch

  • 75 Want to read
  • 21 Currently reading

Published by U.S. Dept. of Justice, National Institute of Justice in Washington, D.C .
Written in English

    Subjects:
  • Radio -- Antennas,
  • Automobiles -- Radio equipment

  • Edition Notes

    Other titlesTechnology assessment program
    SeriesNIJ report -- 201-85
    ContributionsNational Institute of Justice (U.S.)
    The Physical Object
    Paginationvi, 31 p. :
    Number of Pages31
    ID Numbers
    Open LibraryOL14921454M

    USA US06/, USA USA US A US A US A US A US A US A US A US A Closed-loop MIMO technique standardized in LTE can support different layer transmissions through precoding operation to match the channel multiplexing capability. However, the performance of the limited size codebook still needs to be evaluated in real channel environment for further insights. Based on the wideband MIMO channel measurement in a typical indoor scenario, capacity loss (CL) of

    For the launch of intelligent transport systems (ITS), it is necessary to have detailed understanding of their performance. The draft standard IEEE p is the physical and medium access control layer (PHY/MAC) standard extension for wireless access in vehicular communications to IEEE In order to evaluate its performance, we carried out an infrastructure-to-vehicle trial on a Performance evaluation of SISO, SIMO and MIMO antenna systems for car-to-car communications in urban environments. In Int. Conf. Intelligent Transport Systems Telecommunications (ITST), pages 51–56, 20–22 October doi: /ITST

      g, for a two-transmit-antenna case [ 45] would set the transmit antennas to a and 45 polarization LTE_ config. winner_antenna_ params TX_ antenna_ position_ in_lambdas: distance of the transmit antennas measured in wavelength(X).   Z. Jiang, S. Zhou, and Z. Niu, ‘‘Optimal antenna cluster size in cell-free distributed large-scale antenna systems with imperfect CSI and inter-cluster interference,” IEEE Trans. Vehicular Tech., , 64(7)


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Measured vehicular antenna performance by Ramon L Jesch Download PDF EPUB FB2

Genre/Form: Government publications: Additional Physical Format: Online version: Jesch, Ramon L. Measured vehicular antenna performance. Washington, D.C.: U.S. Dept [Show full abstract] discrete frequencies of, and MHz and one slot antenna operating at MHz were also measured.

Plots of power gain radiation patterns are given for the In [17], Kaul et al. present results from a study examining the effects of antenna diversity and placement of V2V link performance in vehicular and ad hoc networks.

The experiments use roof and in Abstract. Adaptive antenna arrays (AAs) facilitate attractive signal processing techniques with potential to increase the spectral efficiency of the universal mobile telecommunications system (UMTS). As reported in (Winters ), AAs can be used to offer increased protection against fading, thermal noise and/or co-channel multiple access interference, i.e.

the three major capacity limiting   Figs. 2a and 2b show the average bitrate, in Megabits per second, versus the distance of the stopped vehicle relative to the moving vehicle for the speeds of 20 km/h and 40 km/h, respectively. The bitrate affects the performance in entertainment applications (e.g.

audio and video streaming). At all measured speeds it was observed that when the two vehicles were close to each other (less than In this study we evaluate properties of measured residential-area channels, where the base station is equipped with antenna ports.

An important property to consider is the orthogonality between channels to different users, since this property tells us how advanced multi-user MIMO (MU-MIMO) pre-coding schemes we need in the :// Correct antenna placement is critical to the performance of an antenna.

An antenna mounted on the roof of a car will function better than the same antenna installed on the hood or trunk. Knowledge of the vehicle may also be an important factor in determining what type of antenna to :// This paper describes the design of a high-efficiency vehicular roof-mounted antenna for wireless access for vehicular environment (WAVE) communication systems used for ubiquitous intelligent systems.

The main objective of the ubiquitous intelligent system’s automotive IT technology is to enhance the connectivity among vehicles to ensure seamless communication and to reduce the initial access This paper reviews recent developments in vehicular radar at 60 GHz and above, with a focus on low cost integrated antennas.

We investigate a number of radar and communication antenna systems that can be made inexpensively and in large volumes using standard CMOS semiconductor fabrication ://   Antenna selection for MIMO systems - a tutorial IEEE Presentation Submission Template (Rev.

9) Document Number: IEEE Cm/ Date Submitted: [07/09/07] Source: Andreas F. Molisch, Phil Orlik, Jinyun Zhang Mitsubishi Electric  › 百度文库 › 互联网. 西安交通大学教师个人主页平台是国内第一家实时发布本校教师信息的官方网站,由西安交通大学主办,为广大用户第一时间详尽全面地展示本校所有教师的基本情况,教学水平,科研成果,团队活动,教师新闻,硕博士招生等相关信息。 An offset paraboloidal reflector antenna for vehicular collision avoidance radar is designed and evaluated.

The antenna is designed to use at 77GHz band, and to have suitable gain and beamwidth for the vehicular collision avoidance radar. The properties measured and calculated are compared and confi The remainder of the paper is organized as follows.

Antenna geometry and performance are illustrated in Section II. The simulated and measured results are presented in Section III.

Finally, in Section IV, we give the conclusion. 2 Antenna Geometry and Performance. The geometry of the proposed CP cross‐dipole antenna is shown in Figure :// Measured LTE vehicular antenna patterns were then applied using a spatial and polarimetric convolution process.

The resulting channels were streamed into a Keysight PropSim F8 channel emulator, which was programmed to communicate with the multi-channel LTE BSs emulator and a Samsung S5 mobile client performing a handover :// An intuitive tutorial of antennas and antenna theory.

This website is designed to present a comprehensive overview of antennas, from design, to measurement and theory.

Unnecessarily complicated math is avoided Compact Vivaldi patch antenna with a parasitic meander line is presented in this paper. A PIN diode switch is used to connect and disconnect ultrahigh frequency band (UHF) with ultrawide bandwidth (UWB).

The operating frequencies can be switched among different services, depending on the switching states (ON/OFF) to add the lower band when required. This antenna is suitable for portable DVB-T The WB25C0M from COJOT is a rugged wideband antenna for high-performance communication and jamming applications in the 25 – MHz frequency range.

Features Superior performance starting from as low as 25 MHz~   Abstract—The first measured results for massive multiple-input, multiple-output (MIMO) performance in a line-of-sight (LOS) scenario with moderate mobility are presented, with 8 users served by a antenna base Station (BS) at GHz.

When such a   B) QRP Performance: 6 - QRP performance was average as might be expected from a shortened antenna. C) Ease of Use: 7 - Changing the clip on the coild of the antenna each time I changed bands is the major drawback when using the Buddipole.

The SWR was also effected by anything that got within 10 feet of the :// A multi-band antenna suitable for Long-term Evolution (LTE) is shaped around a 3D printed cylindrical form, and arranged in a MIMO configuration.

The antenna is based on a planar wideband monopole radiator with an additional resonator for the LTE frequency band. Conforming the antenna onto a cylindrical shape reduces its length while keeping ://. The antenna is fabricated on the Rodgers RT/Duroid dielectric substrate (mm) and then measured by using an HPC network anamm, mm, lyzer.

Other design parameters are mm, mm, and mm. Fig. 2(b) gives the comparisons between the measured and the calculated results of return  › 百度文库 › 高校与高等教育.Linear pre-coding performance in measured very-large MIMO channels Gao, Xiang LU; Edfors, Ove LU; Rusek, Fredrik LU and Tufvesson, Fredrik LU () IEEE Vehicular Technology Conference VTC Fall.

Mark; Abstract Wireless communication using very-large multiple-input multiple-output (MIMO) antennas is a new research field, where base stations are equipped with a very large number of antennas as In this paper, the systematic design of a multiple antenna system for 5G smartphone operating at GHz for multiple-input multiple-output (MIMO) operation in smartphones is proposed.

The smartphone is preferred to be lightweight, thin, and attractive, and as a result metal casings have become popular. Using conventional antennas, such as a patch antenna, Inverted-F antennas, or monopole, in