Title :
A new high bit rate TDMA modem for INTELSAT applications
Author :
D´Ambrosio, A. ; Mazeola, E. ; Barbieri, A.
Author_Institution :
Siemens Telecomunicazioni SpA, Milan, Italy
Abstract :
Old generation 120 Mb/s TDMA modems for INTELSAT systems were characterized by operational criticality and high cost. The difficulties existed especially in the demodulator function, due to the need for fast acquisition of both the carrier frequency and phase. The paper describes a new generation of TDMA modems which adopts a numerical approach for carrier phase extraction based on a modified Viterbi & Viterbi (1983) carrier phase estimator
Keywords :
frequency estimation; maximum likelihood estimation; modems; phase estimation; satellite communication; time division multiple access; 120 Mbit/s; INTELSAT applications; INTELSAT systems; carrier frequency; carrier phase extraction; demodulator; fast acquisition; high bit rate TDMA modem; modified Viterbi carrier phase estimator; phase acquisition; Bit rate; Costs; Degradation; Demodulation; Filtering; Filters; Frequency; Linearity; Modems; Time division multiple access;
Conference_Titel :
Communication Technology Proceedings, 1996. ICCT'96., 1996 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-2916-3
DOI :
10.1109/ICCT.1996.545122
