Improved correlation of generalized DFT with nonlinear phase for OFDM and CDMA communications

Ali N. Akansu, Handan Agirman-Tosun

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

Recently, Generalized Discrete Fourier Transform (GDFT) has been forwarded as the theoretical framework to design a variety of constant modulus orthogonal complex transforms with non-linear phase. In this paper, we evaluate the auto- and cross-correlation properties of several GDFT solutions and compare them with the popular code families like Gold, Walsh and DFT. It is shown that the GDFT brings significant correlation performance improvements over known code families. We predict that GDFT based OFDM and CDMA solutions will offer performance improvements in multicarrier communications systems of the future.

Original languageEnglish (US)
Pages (from-to)1369-1373
Number of pages5
JournalEuropean Signal Processing Conference
StatePublished - Dec 1 2009
Event17th European Signal Processing Conference, EUSIPCO 2009 - Glasgow, United Kingdom
Duration: Aug 24 2009Aug 28 2009

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering

Keywords

  • CDMA
  • Correlation performance
  • DMT
  • Generalized Discrete Fourier Transform
  • OFDM

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