By Topic

Broadcasting, IEEE Transactions on

Issue 3 • Date Sep 1993

Filter Results

Displaying Results 1 - 5 of 5
  • Spectrum efficiency of radio data system (RDS)

    Page(s): 331 - 334
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (360 KB)  

    The paper addresses the use of the radio data system (RDS) for datacasting road traffic information. It is concluded that, although RDS may be essential to the early phases of introduction of novel advanced traffic information systems (ATISs), FM subcarrier transmission does not offer a spectrum-efficient solution for large-scale ATIS datacasting. The conclusions are believed relevant to the spectrum-efficient design of the future datacasting networks View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A ray-tracing propagation model for digital broadcast systems in urban areas

    Page(s): 309 - 317
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (684 KB)  

    A propagation model is presented for characterizing the channel response for digital systems in urban areas where multiple reflections from buildings are encountered. A deterministic ray-tracing propagation model is used to predict the time delay and fading characteristics for the channel in a hypothetical urban area. The analysis shows that due to multiple reflection and diffraction sources, the RMS delay spread of the channel in urban areas can be several hundred nanoseconds, so that very effective equalizers will be required to achieve successful performance of high-data-rate digital systems such as 20-Mb 16-QAM digital HDTV. The channel response results presented also suggest that polarization diversity may be a useful technique for mitigating some of the channel impairments predicted by the propagation model View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Objective noise performance evaluation of component video signals using an electronic color video simulator

    Page(s): 327 - 330
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (312 KB)  

    Theoretical and experimental evaluation of the objective signal-to-noise performance of component video signals is described. Using a mathematical model, an expression for the component video-signal-to-noise ratio, called the display-signal-to-noise-ratio (DSNR), is derived for Gaussian white noise input. Using this model the signal-to-noise performance of 100% saturated primary and secondary colors are analyzed for a PAL-I video system. In order to verify the theoretical results, an electronic color video circuit was implemented. Using this simulator, objective noise impairments in 100% saturated primary and secondary colors have been determined View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Automatic recognition of intermodulation beat products in cable television pictures

    Page(s): 318 - 326
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (796 KB)  

    It was found previously (Ward and Zhang 1992) that the two-dimensional Fourier transform of a picture impaired by intermodulation beat products contains distinguishable pulses. Each product results in four pulses with special characteristics. The authors further analyze and study the intrinsic properties of these pulses. Based on these properties a method is designed which can detect these pulses, even if the picture is also impaired by snow as long as the intermodulation impairment is visible to the human eyes View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Selection of digital terrain data base parameters for radiocommunication system planning applications

    Page(s): 335 - 343
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (572 KB)  

    Several aspects of terrain databases (TDBs) used in radio communication system planning tools are considered. It has been found that parameters like grid size, interpolation methods, propagation models, etc. used in this type of application differ from one application to another. Some of these parameters are analyzed in order to evaluate their influence on the overall prediction error View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

IEEE Transactions on Broadcasting covers the field of broadcast technology, including the production, distribution, transmission, and propagation aspects of broadcasting.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Yiyan Wu
Communications Research Ctr Canada