NASA NTRS · 19880016341
An 8-DPSK TCM modem for MSAT-X
Abstract
This paper describes the real-time digital implementation of an 8-differentiated phase-shift keying (DPSK) trellis-coded modulation (TCM) modem for operation on an L-band, 5 kHz wide, land mobile satellite (LMS) channel. The modem architecture as well as some of the signal processing techniques employed in the modem to combat the LMS channel impairments are described, and the modem performance over the fading channel is presented.
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Jedrey, Thomas C., Lay, Norman E., Rafferty, William. 1988-05-01. An 8-DPSK TCM modem for MSAT-X. https://ntrs.nasa.gov/citations/19880016341
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