Title :
A novel multi-carrier scheme: Cyclic block filtered multitone modulation
Author :
Tonello, Andrea M.
Author_Institution :
WiPli Lab. - Wireless & Power Line Commun. Lab., Univ. of Udine, Udine, Italy
Abstract :
A novel filter bank modulation scheme is proposed. This architecture is based on the Filtered Multitone (FMT) modulation concept where well frequency confined prototype pulses are deployed. However, in the proposed scheme linear convolutions are replaced by circular convolutions. We refer to this new scheme as Cyclic Block Filtered Multitone Modulation (CB-FMT). Both the synthesis and the analysis filter banks in CB-FMT can be efficiently implemented in the frequency domain via the concatenation of Fast Fourier Transforms (FFTs). Furthermore, it is possible to design the prototype pulse so that the system is orthogonal and it does not experience any inter-symbol and inter-carrier interference in ideal conditions. To cope with the interference introduced by a frequency selective fading medium, simple frequency domain equalization can be used. Numerical results show that CB-FMT can provide better performance than FMT and OFDM in frequency selective fading with comparable or lower complexity.
Keywords :
OFDM modulation; channel bank filters; convolution; fast Fourier transforms; intercarrier interference; intersymbol interference; FMT; OFDM; circular convolutions; cyclic block filtered multitone modulation; fast Fourier transforms; filter bank modulation scheme; filter banks; frequency domain equalization; frequency selective fading medium; inter-carrier interference; inter-symbol interference; linear convolutions; multi-carrier scheme; Complexity theory; Discrete Fourier transforms; Frequency modulation; Frequency-domain analysis; OFDM; Prototypes;
Conference_Titel :
Communications (ICC), 2013 IEEE International Conference on
Conference_Location :
Budapest
DOI :
10.1109/ICC.2013.6655422