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

Author

Farhang-Boroujeny, Behrouz ; Yan, Wu ; Attallah, Samir

Author_Institution

Electr. Eng. Dept., Univ. of Utah, Salt Lake City, UT, USA

Volume

51

Issue

2

fYear

2003

fDate

2/1/2003 12:00:00 AM

Firstpage

170

Lastpage

174

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.

Keywords

digital subscriber lines; error statistics; modulation; noise; ADSL systems; BER estimation; PAR-limited DMT systems; asymmetric digital subscriber line; bit-error rate; clipping noise injection; discrete multitone modulation; discrete multitone-based systems; high-peak power samples clipping; multicarrier communication systems; noise injection method; peak-to-average power ratio; simulations; system performance; Bit error rate; Degradation; Gaussian distribution; Gaussian noise; Noise level; OFDM modulation; Peak to average power ratio; Probability distribution; Time measurement; Wireless communication;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/TCOMM.2003.809225

Filename

1190745