Time-frequency analysis: theory and applications
Time-frequency analysis: theory and applications
Gabor Analysis and Algorithms: Theory and Applications
Gabor Analysis and Algorithms: Theory and Applications
OFDM for Wireless Multimedia Communications
OFDM for Wireless Multimedia Communications
A Time-Frequency Well-localized Pulse for Multiple Carrier Transmission
Wireless Personal Communications: An International Journal
Orthogonal transmultiplexers in communication: a review
IEEE Transactions on Signal Processing
Orthogonal time-frequency signaling over doubly dispersive channels
IEEE Transactions on Information Theory
Overlapped discrete multitone modulation for high speed copper wire communications
IEEE Journal on Selected Areas in Communications
Nonorthogonal pulseshapes for multicarrier communications in doubly dispersive channels
IEEE Journal on Selected Areas in Communications
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The issue of multicarrier transmission with high spectral efficiency and low interference over time-frequency (T-F) dispersive channels is addressed in this paper. Specifically, we propose a digital signal transmission scheme employing overcomplete Weyl-Heisenberg (W-H) frames as modulation pulses. The proposed W-H frame transmission scheme, which relaxes the conventional orthogonality/biorthogonality constraints for perfect transmultiplexing, can be viewed as a generalization of the orthogonal frequency division multiplexing (OFDM) and nonorthogonal (biorthogonal) frequency division multiplexing (NOFDM). With this new transmission scheme, one can not only achieve higher spectral efficiency effectively but also design the pulse shape more flexibly to combat the impact of the propagation channel. In order to optimally mitigate the intersymbol interference (ISI) and interchannel interference (ICI) caused by the wireless channel, the selections of the Gaussian pulse shape and T-F grid parameters are addressed jointly from the viewpoint of minimum energy perturbation for several typical channel scattering functions. Simulation results are presented to study the performance of the proposed system. It is shown that the proposed overcomplete W-H frame transmission system with a lower-order constellation is more robust against the T-F dispersive channels than the incomplete Riesz basis system employing a higher-order constellation with the same spectral efficiency.