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Industry CanadaCommunications Research CentreAn Agency of Industry CanadaCommunications Research Centre Satellite Communications ResearchFields of Research Advanced satellite communications concepts, analysis, and design, including OBP, satcom terminal development at Ka-Band for multimedia communications terminals; military satcom; modulation and coding; microwave photonics; and software define radio. Contact Bernard CaronVice President Satellite Communications Research Tel.: (613) 991-9309 Fax: (613) 990-8842 E-mail: bernard.caron@crc.ca Integrated Electronics ResearchFields of Research The laboratories are concerned with the future electronics-enabling technologies required to support the departmental initiatives in communications and information technology. This includes satellite communications, military communications, and spectrum-effective communications. Included are responsibilities for carrying out research and development activities on devices, circuits, and components for application to high-frequency microwave/millimetre wave communications systems and high-speed data processing. Contact Valek Szwarc Optoelectronic Materials and Components ResearchFields of Research This research activity is aimed at the development of novel, low-cost optical and optoelectronic components and devices that increase the capacity, versatility, and performance of fibre optic broadband networks. There are two main research areas:
Research in this group targets the development of passive photonic devices for wavelength demultiplexing, filtering, and routing, as well as more complex "value-added" components exploiting materials with novel optical properties such as photosensitivity or optical nonlinearities. Contact Claire Callender Optical Communications and Electrophotonics ResearchFields of Research The photonics research program is focused on photosensitivity in optical waveguides and its use in fabrication of a wide variety of passive devices. A capability to fabricate planar and channel waveguides using PECVD is also being developed. The principal application is passive components in optical communications, especially for WDM (Wavelength Division Multiplexing). The two principal thrusts in WDM are optical Add/Drop filters and chromatic dispersion compensation. The Add/Drop filter based on Mach-Zehnder interferometer and photo-induced Bragg gratings, which were invented at CRC, is a versatile filter used to add/drop individual channels from a WDM transmission stream. Chromatic dispersion compensation, which also originated at CRC, uses long-fibre Bragg gratings with variable periods to compensate for chromatic dispersion in fibre at high data rates. So far, individual WDM channels are compensated separately, but now longer gratings are needed to compensate an entire WDM window at a time. Contact Stephen Mihailov Radio Science ResearchFields of Research CRC is the Canadian national centre for propagation research across the entire radio spectrum. The research program concentrates on propagation problems peculiar to Canadian latitudes, with a view to applying the results to current and future domestic communications systems. The main interest is in the limitations of the transmission medium, particularly the lower atmosphere, and the effect of such limitations on the allocation and sharing of the radio frequency spectrum. Research on the application of propagation knowledge to predictions of communications system performance includes modelling the radio propagation environments: ionosphere, troposphere, and terrain. Contact Dave Rogers Radio Communications Technologies ResearchFields of Research Advanced terrestrial radio communications systems and technologies for fixed, mobile, and personal communications. Includes modelling of transmission channel; channel probing; techniques to mitigate adverse propagation and interference effects; signal design; adaptive equalization and antenna techniques; modulation and coding; digital signal processing; spectrum monitoring/surveillance techniques; speech compression and enhancement techniques; application of encryption techniques for communications security and privacy. Contact J.J. Schlesak Networked Media LaboratoryFields of Research The Networked Media Laboratory at CRC conducts research on the human and social impacts of new services for global networks, such as the Internet. Most of the research projects undertaken in the Networked Media Laboratory use human-centred design to develop new technologies that will benefit Canadian industry. Examples of current research areas include the development of natural-language accessible information systems, Web-based distance education, and collaboration in virtual environments. As well, the Networked Media Laboratory provides expert advice to government and industry about other topics in human-computer interface design and evaluation, as needed. To accomplish this, the Networked Media Laboratory is staffed by scientists trained in experimental psychology and computer science with a specialization in human interface design. Contact Thomas Whalen Network ResearchFields of Research Research on communications/computer network technologies, at both the network design and network services levels. This research is directed at large-scale civilian and military networks, including international ATM networks and the Internet. Specific topics include the design of new services, the design of user interfaces, and the evaluation of network configurations and operations. Contact John Robinson Radio Broadcast Systems and Transmission LaboratoryFields of Research The laboratory conducts research and feasibility studies in new and advanced broadcast systems and services for terrestrial and satellite sound and data broadcasting to fixed, portable, and vehicular receivers. The group carries out R&D in the following areas: new digital system concepts for better audio quality and service availability; new coverage concepts for spectrum and power efficiency; coverage prediction software for systems planning and optimization; and new sound and data broadcast services. To carry out these research activities, the group has access to the following facilities: specialized workstations and sophisticated coverage prediction software, a digital radio broadcasting laboratory testbed, and an experimental radio broadcasting station. The testbed permits testing the performance of new equipment and interfaces under realistic conditions, including impairments such as interference and multipath. The group also operates a minivan that is equipped for field tests of broadcast-receiving equipment and measurements of channel characteristics. Software tools have been developed for the analysis of the measured data and the generation of realistic channel models that can be used in simulation tests. The group has been closely involved with the standardization activities and the implementation of digital radio broadcasting in Canada. Contact René Voyer Advanced Audio Systems LaboratoryFields of Research The laboratory conducts research and development especially related to the future introduction of digital radio broadcasting (DRB), sound systems accompanying advanced television (ATV), and sound coding schemes for eventual use on the information highway. The group carries out research in three main areas: digital audio source coding techniques for mono, stereo, and multi-channel sound systems; psychoacoustics and subjective assessment of sound systems; and channel coding and modulation techniques suitable for broadcasting digital audio signals to fixed, mobile, and portable receivers. To carry out these research activities, the group has unique facilities: a calibrated reference listening room that meets international standards; stereo and multichannel sound playback systems allowing totally seamless switching between audio excerpts for critical comparison; and general-purpose workstations and sophisticated computer simulation software for digital signal processing. The facilities and expertise for conducting audio research and listening tests are unique in North America. Contact Louis Thibault Advanced Video SystemsFields of Research The group conducts leading-edge research in video processing, source coding and human visual perception related to advanced television (ATV) systems, and new video and multimedia services. Research is carried out in the following main areas: digital video processing (format conversion), video compression, subjective assessment of picture quality, stereoscopic (3D) video (psychophysics and coding aspects) and High Definition Television (HDTV). To support this research, the group has excellent facilities, including 3D capture and display, HDTV, a world-class subjective evaluation facility, extensive computer simulations facility and MPEG-2 encoding and streaming equipment. Contact André Vincent Television Systems and Transmission LaboratoryFields of Research The laboratory conducts research in coding and modulation alternatives for the transmission of wide-band analog and digital signals over off-air, cable, and satellite channels. The emphasis is on the transmission of digital advanced television signals. The laboratory is supported by excellent computer and hardware simulation facilities. Research is also carried out in the characterization of wide-band transmission channels. Contact Bernard Caron |
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