Design and implementation of a DDS-based multi-carrier GMSK modulator

M. J. Kesoulis; C. S. Koukourlis; J. N. Lygouras; D. Soudris; J. N. Sahalos

doi:10.1002/dac.1014

Design and implementation of a DDS-based multi-carrier GMSK modulator

M. J. Kesoulis, C. S. Koukourlis, J. N. Lygouras, D. Soudris, J. N. Sahalos

Department of Engineering

Democritus University of Thrace

Research output: Contribution to journal › Article › peer-review

Abstract

The design and hardware implementation of a multi-carrier Gaussian minimum shift keying (GMSK) modulator, based on a direct digital synthesizer, suitable for global system for mobile (GSM) base station applications is described. The synthesizer does not only generate the baseband GMSK signal, but also delivers it at a low IF. Special care has been taken in order to minimize the required memory of the synthesizer. The hardware implementation is mainly based on a field programmable gate array device (FPGA) and a D/A converter. The number of carriers depends on the size of the FPGA. Finally, the hardware implementation of a two-carrier modulator is given.

Original language	English
Pages (from-to)	971-987
Number of pages	17
Journal	International Journal of Communication Systems
Volume	22
Issue number	8
DOIs	https://doi.org/10.1002/dac.1014
Publication status	Published - Aug 2009

Keywords

Direct Digital Synthesis (DDS)
Gaussian filter
GMSK modulation
GSM

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10.1002/dac.1014

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abstract = "The design and hardware implementation of a multi-carrier Gaussian minimum shift keying (GMSK) modulator, based on a direct digital synthesizer, suitable for global system for mobile (GSM) base station applications is described. The synthesizer does not only generate the baseband GMSK signal, but also delivers it at a low IF. Special care has been taken in order to minimize the required memory of the synthesizer. The hardware implementation is mainly based on a field programmable gate array device (FPGA) and a D/A converter. The number of carriers depends on the size of the FPGA. Finally, the hardware implementation of a two-carrier modulator is given.",

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AU - Soudris, D.

AU - Sahalos, J. N.

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AB - The design and hardware implementation of a multi-carrier Gaussian minimum shift keying (GMSK) modulator, based on a direct digital synthesizer, suitable for global system for mobile (GSM) base station applications is described. The synthesizer does not only generate the baseband GMSK signal, but also delivers it at a low IF. Special care has been taken in order to minimize the required memory of the synthesizer. The hardware implementation is mainly based on a field programmable gate array device (FPGA) and a D/A converter. The number of carriers depends on the size of the FPGA. Finally, the hardware implementation of a two-carrier modulator is given.

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Design and implementation of a DDS-based multi-carrier GMSK modulator

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Keywords

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