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

• Published in: IEEE communications letters Vol. 14; no. 6; pp. 503 - 505
• Main Authors: LIN MEI, SHA, Xue-Jun, ZHANG, Nai-Tong
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.06.2010; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 4-Weighted Fractional Fourier Transform (4-WFRFT); Applied sciences; Bit rate; Blocking; carrier scheme convergence; Carriers; Channels; Chirp; Communication systems; Convergence; Distortion; Eigenvalues and eigenfunctions; Exact sciences and technology; Fading; Fourier transforms; Frequency domain analysis; Information, signal and communications theory; Mobile communication; Modulation; Modulation, demodulation; OFDM; selective fading channel; Signal and communications theory; Signal to noise ratio; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Fading channels; Performance evaluation; Fractional Fourier transformation; Energy distribution; Multicarrier; 4-Weighted Fractional Fourier Transform (4-WFRFT); Single carrier; selective fading channel; Selective fading; Weighting; Modulation; Telecommunication system; Unification; carrier scheme convergence; Open market
• ISSN: 1089-7798; 1558-2558
• DOI: 10.1109/LCOMM.2010.06.092413

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.