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1、SX simplex(transmission)单工传输FDX full-duplex 全双工HDX half-duplex 半双工AM amplitude modulation 调幅FM frequency modulation 调频PM phase modulation 调相FDM frequency-division multiplexing 频分复用TDM time-division multiplexing 时分复用MA multiple access 多路存取、多路访问CW continuous-wave 连续波CDMA code-division multiple access码
2、分复用PAM pulse amplitude modulation 脉幅调制PCM pulse-code modulation 脉码调制PPM pulse position modulation 脉位调制PWM pulse width modulation 脉宽调制PDF probability density function 概率密度函数AWGN additive white Gaussian noise 加性高斯白噪声SNR signal noise ratio 信噪比WSS wide-sense stationary 广义频稳RZ return-to-zero 归零NRZ nonret
3、urn-to-zero不归零ISI inter-symbol interference 码间串扰DM(M) delta modulation增量调制FEC forward error correction 前向纠错ARQ automatic repeat request自动请求重传ASK(OOK) amplitude-shift keying （on-off keying ）幅移键控FSK frequency-shift keying 频移键控MSK minimum-shift keying 最小频移键控PSK phase-shift keying 相移键控DPSK differential phase-shift keying 相对移相
