EVM simulation of power amplifiers with designed signals in OFDM systems

Tzu-Hsien Sang*, Hsin Hua Huang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

RF circuitry plays a crucial role in the success of modern wireless communications. The linearity of RF devices, such as the power amplifier studied in this paper, is the key in determining the overall system performance. In communication systems adopting Orthogonal Frequency-Division Multiplexing (OFDM), non-ideal effects are summarized by the measurement of the Error Vector Magnitude (EVM). During the process of circuit design, it is desirable yet very time-consuming to include in simulations the EVM test by inputting pseudo-random OFDM signals. To speed up the simulation, a specially designed broadband signal is developed with certain spectral and statistic properties while maintaining a short length. By using the designed signal, the simulation time can be drastically reduced with accurate EVM results as compared to using lengthy pseudo-random OFDM signals.

Original languageEnglish
Title of host publication2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings
Pages5897-5900
Number of pages4
DOIs
StatePublished - 7 Jul 2011
Event2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Wuhan, China
Duration: 15 Apr 201117 Apr 2011

Publication series

Name2011 International Conference on Electric Information and Control Engineering, ICEICE 2011 - Proceedings

Conference

Conference2011 International Conference on Electric Information and Control Engineering, ICEICE 2011
CountryChina
CityWuhan
Period15/04/1117/04/11

Keywords

  • OFDM
  • Power amplifier
  • error vector magnitude (EVM)
  • nonlinearity

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