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We also realize wavelength remodulation for carrying upstream on-off keying (OOK) data to reduce the cost budget at the optical network unit.

为了降低光网络单元的成本预算，我们对下行的光载波进行了上行传输开关键控信号的重调制。

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The ultra wideband (UWB) radio models have been introduced with pulse-position-modulation (PPM), on-off-keying (OOK) and pulse-amplitude-modulation (PAM).

分析了超宽带冲激无线电的脉位调制、通断键控调制和脉冲幅度调制的信号模型。

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