NASA NTRS · 19920014911
Performance evaluation of a mobile satellite system modem using an ALE method
Abstract
Experimental performance of a newly designed demodulation concept is presented. This concept applies an Adaptive Line Enhancer (ALE) to a carrier recovery circuit, which makes pull-in time significantly shorter in noisy and large carrier offset conditions. This new demodulation concept was actually developed as an INMARSAT standard-C modem, and was evaluated. On a performance evaluation, 50 symbol pull-in time is confirmed under 4 dB Eb/No condition.
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Ohsawa, Tomoki, Iwasaki, Motoya. 1990-01-01. Performance evaluation of a mobile satellite system modem using an ALE method. https://ntrs.nasa.gov/citations/19920014911
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