The design and performance of a modem for land mobile satellite communicationsThe digital implementation and performance of a multipath fade-tolerant differentially coherent 8-PSK-based modem for a land mobile satellite experiment (MSAT-X) program is described. At the receiver, differential detection using a matched filter arrangement and feedforward Doppler compensation is employed to achieve several operational benefits. For this L-band satellite link, the channel utilization is an efficient 1.0 bps/Hz for raw data and 1.5 bps/Hz for coded data. The experimental data analysis shows that the modem functions over the fading channel and performs within 1 dB of theoretical or simulation estimates.
Document ID
19890049234
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jedrey, T. C. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Lay, N. E. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Rafferty, W. (California Institute of Technology Jet Propulsion Laboratory, Pasadena, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1988
Subject Category
Electronics And Electrical Engineering
Meeting Information
Meeting: International Conference on Satellite Systems for Mobile Communications and Navigation