On Sat, Dec 07, 2013 at 02:26:18PM +0100, bie...@student.agh.edu.pl wrote: > Could you explain how the converting the EbNo value to the noise > voltage in the following example is done? > http://gnuradio.org/redmine/projects/gnuradio/repository/entry/gr-digital/examples/berawgn.py > > I can see that there is a function (EbNo_to_noise_voltage) > responsible for that but I have problem with understanding where > this equation came from. Could you possibly explain it to me or at > least recommend some book where I can find the solution?
Given an E_b of 1, what is the noise *voltage* (i.e. the expected amplitude of the AWGN process) that will cause an E_b / N_0 of x, if E_b / N_0 is given in dB? If you take pencil and paper, and solve for the noise voltage, you'll get this equation. MB -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT -- University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association
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