The approach to carrier scheme convergence based on 4- weighted fractional fourier transform

Authors:
Lin Mei;Xue-jun Sha;Nai-tong Zhang
Affiliations:
Communication Research Center, Harbin Institute of Technology, Harbin, Heilongjiang, P. R. China;Communication Research Center, Harbin Institute of Technology, Harbin, Heilongjiang, P. R. China;Communication Research Center, Harbin Institute of Technology, Harbin, Heilongjiang, P. R. China
Venue:
IEEE Communications Letters
Year:
2010

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Abstract

We propose a new variant of a block transmission based on 4-Weighted Fractional Fourier Transform (4-WFRFT), which contains a compatible process of single-carrier (SC) and multi-carrier (MC) modulation. The 4-WFRFT system has an even and symmetrical bit energy distribution on the time-frequency plane that it could achieve a better performance than or equal to those of SC and MC systems in selective fading channels. The approach of 4-WFRFT may facilitate unification of the two competitive carrier schemes, and improve the distortion resistance capability of communication system.