amplitude keying

At present, many researches about all-optical wavelength converters only based on the signal modulation formats of binary amplitude shift keying ( OOK) and differential phase shift keying ( DPSK), but it is very few to the signal modulation format of polarization shift keying ( PolSK).

目前，全光波长转换器的研究主要集中在二进制振幅键控（OOK）和差分移相键控（DPSK）信号调制格式，对于偏振移位键控（PolSK）信号调制格式全光波长转换的研究很少。

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A scheme which adopts low chip-rate but no extra label length is proposed in this dissertation. The OC label is phase-shift keying ( PSK) modulated on the amplitude-shift keying ( ASK) modulation payload.

本文提出了一种采用低速OC标签但不增加标签开销的相移键控光码（PSK-OC）标签和幅移键控（ASK）净荷正交调制光分组格式。

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Punctured convolutional coding with an 8, 16 and 32 differential amplitude and phase shift keying ( DAPSK) modulation is considered.

研究带删除卷积码的8、16、32差分幅/相移键控（DAPSK）调制。

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The Binary phase shift keying ( BPSK) and Mary amplitude shift keying ( MASK) are widely used in radar systems, their elliptic covariance do not equal zero, are noncircular signals.

二进制相移键控（BPSK）和幅度调制（MASK）等信号是雷达系统中常用的信号，这种调制信号的椭圆协方差矩阵不为零，被称为非圆信号。

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A method to identify the modulation levels of M-ary Quadrature Amplitude Modulation ( M-QAM) and M-ary Amplitude shift keying ( M-ASK) was developed to rapidly and automatically identify the modulation levels of digitally modulated signals at low signal-to-noise ratios ( SNR).

为了快速自动识别低信噪比下的数字幅度调制进制，提出了一种识别M进制正交幅度调制（M-QAM）和M进制幅度键控（M-ASK）的调制进制的方法。

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This is called "amplitude shift keying".

这就是所谓的“振幅键控”。

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Thirdly, we quantify the power penalty caused by the PMD in optical subcarrier multiplexing ( OSCM) system with amplitude shift keying ( ASK) and binary phase shift keying ( BPSK).

第三，对采用不同调制格式（包括幅移键控和二进制相移键控）的光副载波复用（OSCM）系统中，PMD引起的功率代价进行了量化。

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Second, the paper analyzes the single-pulse modulation which includes pulse amplitude modulation, on-off keying modulation, pulse position modulation and two-phase modulation.

其次分析了单脉冲调制中的脉冲幅度调制、开关键控调制、脉冲位置调制和二相调制。

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