Spectrally Efficient OFDMA Lattice Structure via Toroidal Waveforms on the Time-Frequency Plane

We investigate the performance of frequency division multiplexed (FDM) signals, where multiple orthogonal Hermite-Gaussian carriers are used to increase the bandwidth efficiency. Multiple Hermite-Gaussian functions are modulated by a data set as a multicarrier modulation scheme in a single time-freq...

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Bibliographic Details
Published in:EURASIP journal on advances in signal processing 2010-01, Vol.2010 (1), Article 684097
Main Authors: Aldirmaz, Sultan, Serbes, Ahmet, Durak-Ata, Lutfiye
Format: Article
Language:English
Subjects:
Applications of Time-Frequency Signal Processing in Wireless Communications and Bioengineering
Bandwidth
Engineering
Frequency division
Gaussian
Lattices
Modulation
Multiplexing
Quantum Information Technology
Research Article
Signal,Image and Speech Processing
Simulation
Spectra
Spintronics
Waveforms
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Summary:We investigate the performance of frequency division multiplexed (FDM) signals, where multiple orthogonal Hermite-Gaussian carriers are used to increase the bandwidth efficiency. Multiple Hermite-Gaussian functions are modulated by a data set as a multicarrier modulation scheme in a single time-frequency region constituting toroidal waveform in a rectangular OFDMA system. The proposed work outperforms in the sense of bandwidth efficiency compared to the transmission scheme where only single Gaussian pulses are used as the transmission base. We investigate theoretical and simulation results of the proposed methods.
ISSN:1687-6180
1687-6172
1687-6180
DOI:10.1155/2010/684097