Modulations

ASK

Amplitude-shift keying

FSK

Frequency-shift keying

PSK

Phase-shift keying (1正向 0反向)

DPSK

Differential Phase-shift keying (相对前一个,1反向 0同向)


各种编码

NRZ

Non Return to Zero codes

RZ

Return to Zero

CMI

Coded Mark Inversion

AMI

Alternative Mark Inversion

HDB3

High Density Bipolar of Order 3 code

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