Performance of mobile orthogonal frequency division multiplexing systems over timevarying non-linearities with memory

Alexander Beremiz Hilario Tacuri, José Mauro Pedro Fortes

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The performance of modern communications transmitters utilising multi-carrier modulation techniques is highly sensitive to non-linear distortions arising mainly from the high-power amplifier. The increase in symbol duration makes the system more sensitive to time-varying channels. In addition, the wideband characteristics of multi-carrier signals result in frequency-dependent distortions, typically known as memory effects. This study presents analytical expressions that can be used to evaluate the impact of the distortions induced by time-varying non-linearities with memory on the bit error rate performance of a multi-carrier signal such as the orthogonal frequency division multiplexing. The timevarying non-linearity with memory is modelled by a time-varying Volterra series. The resulting mathematical expressions are applied to specific situations, allowing for a quantitative evaluation of the system performance degradation. & The Institution of Engineering and Technology 2015.

Original languageEnglish
Pages (from-to)1531-1538
Number of pages8
JournalIET Communications
Volume9
Issue number12
DOIs
StatePublished - 13 Aug 2015
Externally publishedYes

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