Fast estimation of BER in PAR-limited DMT systems using noise injection method

B. Farhang-Boroujeny, Y. Wu, S. Attallah

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Abstract

A high peak-to-average power ratio is a major problem that is inherent in all multicarrier communication systems. Clipping the high-peak power samples introduces (extra) clipping noise, which degrades the system performance in terms of bit-error rate (BER). Measuring the BER usually requires a very long simulation time, as clipping occurs very rarely. We propose a method called clipping noise injection, which allows BER estimation (due to clipping) in discrete multitone-based systems in a fast and quite precise way. Savings of as great as 90% or more are observed in some simulations that are reported. Higher savings are expected when lower BER cases have to be studied.
Original languageEnglish
Pages (from-to)170-174
JournalIEEE Transactions on Communications
Volume51
Issue number2
DOIs
Publication statusPublished - 2003

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