This website uses cookies to make the content more user-friendly and effective. By using this website, you agree to the use of cookies. You can find additonal information about the use of cookies and the possibility of objecting to the use of cookies here.

26 - 28 February 2019 // Nuremberg, Germany

Conferences and supporting programme

back to day overview
Session 2.4: Communication IV Wireless Physical & Design Aspects

Robust Software Defined COFDM-Modem for Embedded Applications Vortragssprache Englisch

The presentation will highlight the principles and realization of a high-performance software defined COFDM-modem, designed to make the best use of power lines, sub-sea cables or, simple twisted-pair wires. The modem can also be used in wireless applications. Depending on channel properties, the modem must be configured in terms of positioning the transmission band, its bandwidth, and methods of modulation. The optimization requires signal code construction to produce the maximum effective modem data rate. The optimization yields the structure of the SCC, adapting the bandwidth, the number of active beams and the distribution of QAM-alphabets. An adaptive front-end filter for optimal shortening of the pulse response and a two-stage adaptive equalizer (Kalman) in combination with 4-D Trellis coded modulation achieves a channel capacity just 3.5 dB short of the theoretical limit. The modem automatically adapts all settings during the initial handshake phase which completes within less than one second. The resulting performance is close to the theoretical limit with data rates of up to 11 bits/sec/Hz. The modem can be used in point-to-point or complex point-to-multipoint topologies adapting to new conditions automatically within a fraction of a second. Applications include A/V intercoms, power grid communication, telemetry, smart metering, in-vehicle communication, et cetera. A video transmission across a twisted pair of solid wires will be demonstrated.

--- Date: 27.02.2019 Time: 10:00 AM - 10:30 AM Location: Conference Counter NCC Ost

Speakers

man

Andreas Bayer

A.R. Bayer DSP Systeme GmbH

top

The selected entry has been placed in your favourites!

If you register you can save your favourites permanently and access all entries even when underway – via laptop or tablet.

You can register an account here to save your settings in the Exhibitors and Products Database and as well as in the Supporting Programme.The registration is not for the TicketShop and ExhibitorShop.

Register now

Your advantages at a glance:

  • Advantage Save your favourites permanently. Use the instant access – mobile too, anytime and anywhere – incl. memo function.
  • Advantage The optional newsletter gives you regular up-to-date information about new exhibitors and products – matched to your interests.
  • Advantage Call up your favourites mobile too! Simply log in and access them at anytime.