A. Waseda, M. Sasaki, M. Takeoka, M. Fujiwara, M. Toyoshima, A. Assalini
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引用次数: 1
Abstract
We numerically evaluate the deep-space communication performance in a broadband lossy channel of coherent pulse position modulation (PPM) with on/off receiver. We also consider quadrature amplitude modulation (QAM) signal and phase-shift keying (PSK) signal with dyne-type detections. We find that for an extremely weak signal input power, multilevel PPM system is good strategy, while for an extremely strong signal, multilevel QAM system is recommended.
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