The closed-form expressions for CCK modulation performance were derived from correlation demodulation according to the complementary code properties and CCK modulation regulation.
从补码的特性出发，根据CCK调制规则，采用相关解调，推导在加性白色高斯噪声信道条件下CCK调制的性能表达式。
This paper studied the three-phase PWM(pulse width modulation) rectifier in dual PWM variable frequency speed regulation system.
对双PWM变频调速系统中的三相PWM整流器及其控制方法进行了研究。
Using space vector pulse-width modulation (SVPWM) signal transformation method, speed regulation of induction motor is implemented by controlling the duty ratio of every converter switch.
利用电压空间矢量脉宽调制(SVPWM)信号变换控制功率变换器各开关器件的导通占空比，实现异步电动机的速度调节。
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