Wavelets and subband coding
A Time-Frequency Well-localized Pulse for Multiple Carrier Transmission
Wireless Personal Communications: An International Journal
Perfect reconstruction conditions and design of oversampled DFT-modulated transmultiplexers
EURASIP Journal on Applied Signal Processing
Efficient architectures for multiuser FMT systems and application to power line communications
IEEE Transactions on Communications
Tight Weyl-Heisenberg frames in l2(Z)
IEEE Transactions on Signal Processing
Performance limits for filtered multitone modulation in fading channels
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications - Part 1
Nonorthogonal pulseshapes for multicarrier communications in doubly dispersive channels
IEEE Journal on Selected Areas in Communications
Filtered multitone modulation for very high-speed digital subscriber lines
IEEE Journal on Selected Areas in Communications
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We address the efficient realization of a filtered multitone (FMT) modulation system and its orthogonal design. FMT modulation can be viewed as a Discrete Fourier Transform (DFT) modulated filter bank (FB). It generalizes the popular orthogonal frequency division multiplexing (OFDM) scheme by deploying frequency confined subchannel pulses. We compare three realizations that have been described by Cvetković and Vetterli (1998), and Weiss and Stewart (2000), and Tonello (2006). A detailed derivation of them is performed in the time-domain via the exploitation of different FB polyphase decompositions. We then consider the design of an orthogonal FMT system and we exploit the third realization which allows simplifying the orthogonal FB design and obtaining a block diagonal system matrix with independent subblocks. A numerical method is then presented to obtain an orthogonal FB with well frequency confined subchannel pulses for arbitrarily large number of subchannels. Several examples of pulses with minimal length are reported and their performance is evaluated in typical multipath fading channels. Finally, we compare the orthogonal FMT system with a cyclically prefixed OFDM system in the IEEE 802.11 wireless LAN channel. In this scenario, FMT with minimal length pulses and single tap subchannel equalization outperforms the OFDM system in achievable rate.