Title :
The approach to carrier scheme convergence based on 4-weighted fractional fourier transform
Author :
Mei, Lin ; Sha, Xue-Jun ; Zhang, Nai-Tong
Author_Institution :
Commun. Res. Center, Harbin Inst. of Technol. (HIT), Harbin, China
fDate :
6/1/2010 12:00:00 AM
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 timefrequency 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.
Keywords :
Fourier transforms; convergence; fading channels; modulation; 4-WFRFT system; 4-weighted fractional Fourier transform; MC modulation; SC modulation; block transmission; carrier scheme convergence; communication system; distortion resistance capability; fading channels; multicarrier modulation; single carrier modulation; symmetrical bit energy distribution; time-frequency plane; Bit rate; Chirp; Convergence; Eigenvalues and eigenfunctions; Fading; Fourier transforms; Frequency domain analysis; Mobile communication; OFDM; Signal to noise ratio; 4-Weighted Fractional Fourier Transform (4-WFRFT); selective fading channel, carrier scheme convergence;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2010.06.092413
