Title :
An all digital 8-DPSK TCM modem for land mobile satellite communications
Author :
Jedrey, Thomas C. ; Lay, Norman E. ; Rafferty, William
Author_Institution :
Jet Propulsion Lab., Pasadena, CA, USA
Abstract :
The authors report the real-time digital implementation of an 8-DPSK trellis-coded-modulation (TCM) modem for operation on an L -band, 5 kHz-wide, land mobile satellite (LMS) channel. The model architecture, some of the signal-processing techniques used in the modem to combat the LMS channel impairments (principally multipath fading and Doppler frequency shifts) and the model performance over the AWGN (additive white Gaussian noise) channel are presented
Keywords :
computerised signal processing; digital communication systems; modems; phase shift keying; real-time systems; satellite relay systems; 5 kHz; AWGN; Doppler frequency shifts; L-band; UHF; additive white Gaussian noise; digital 8-DPSK TCM modem; land mobile satellite communications; model architecture; multipath fading; real-time digital implementation; signal-processing; trellis-coded-modulation; Bit error rate; L-band; Laboratories; Least squares approximation; Modems; Modulation coding; Propulsion; Satellite communication; Shadow mapping; Signal to noise ratio;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.196949
