...控制技术论文 关键词：虚拟mimo；用户配对；信噪比门限；半正交 [gap=775]keywords：virtual mimo; user pairing; snr threshold;semi-orthogonal ...
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Lower SNR threshold 低信噪比门限
snr resolution threshold 信噪比分辨门限
Input SNR on threshold 门限输入信噪比
the mean SNR resolving threshold 平均信噪比分辨门限
FFT is a mathematical tool commonly used in digital signal processing, and is characterized by fast operational speed and low SNR threshold value.
快速傅里叶变换是数字信号处理的常用数学工具，以运算速度快和信噪比阈值低为特点。
The iterative method of frequency estimation based on multi-channels, with high estimation precision, low SNR threshold, is easy to implement with hardware.
多通道迭代的测频算法，具有测频精度高，测频信噪比门限低，具有易于硬件实现的特点。
It is emphasized that under some poor SNR conditions, the "threshold effect" of non-coherent demodulator degrades seriously, even causes the receiver to be out of work.
本文特别指出，在小信噪比输入的条件下，非相干解调器的“门限效应”严重恶化，甚至使收信机无法工作。
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