Title :
Software efficient implementation of GMSK modem for an automatic identification system transceiver
Author :
Souissi, Mohamed Ghassen ; Grati, Khaled ; Ghazel, Adel ; Kouki, Ammar
Author_Institution :
Ecole Super. de Commun. de Tunis, Tunis
Abstract :
A software implementation of a GMSK modem for maritime safety applications is proposed. The implementation targets a low cost 16 bit fixed point DSP architecture. Alternative architectures for the modulator and demodulator have been investigated and an optimal I/Q-based configuration was chosen. Several optimizations have been carried out in order to respect the limitations imposed by the fixed point DSP platform while satisfying the real time operation requirement. A hardware implementation is presented and validation tests show that the proposed software modem meets the system specifications in terms of communication data rates.
Keywords :
marine communication; minimum shift keying; transceivers; GMSK modem; automatic identification system transceiver; communication data rates; fixed point DSP architecture; maritime safety applications; optimal I-Q-based configuration; software efficient implementation; Application software; Computer architecture; Costs; Demodulation; Digital signal processing; Hardware; Modems; Software safety; Software testing; Transceivers; AIS; DSP; embedded systems; optimized implementation; software solutions;
Conference_Titel :
Electrical and Computer Engineering, 2008. CCECE 2008. Canadian Conference on
Conference_Location :
Niagara Falls, ON
Print_ISBN :
978-1-4244-1642-4
Electronic_ISBN :
0840-7789
DOI :
10.1109/CCECE.2008.4564605
