一些Rake调制解调器在无干扰宽带高频信道上的性能

P. A. Bello
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引用次数: 22

摘要

作者介绍了用于在宽带(例如1 MHz)高频信道上通信的四个Rake调制解调器的性能评估。注意仅限于无干扰高频信道的性能。考虑了色散对模式多普勒频移和多径扩频的影响。加性噪声、自噪声和不完全信道测量的影响也包括在内。给出了决策导向、并行探头、串行探头和DPSK Rake调制解调器的结果。如果调制解调器的多普勒频移可以跟踪到0.1 Hz以内,则根据调制解调器和信道色散,预测加性高斯白噪声信道的性能在1- 3db以内。
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Performance of some Rake modems over the non-disturbed wide band HF channel
The author presents performance evaluations for four Rake modems used to communicate over the wideband (e.g. 1 MHz) HF channel. Attention is confined to performance for the nondisturbed HF channel. Consideration is given to the impact of mode Doppler shift and multipath spread due to dispersion. The effects of additive noise, self-noise, and imperfect channel measurements are included. Results are presented for decision-directed, parallel probe, serial probe, and DPSK Rake modems. Performance to within 1-3 dB of the additive white Gaussian noise channel is predicted, depending upon the modem and the channel dispersion, if the Doppler shift of the modem can be tracked to within 0.1 Hz.<>
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