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。
The concerted control strategy of rectifier and inverter is analyzed to keep high modulation degree of SPWM, which achieves quick response and high resolution of excitation voltage regulation.
重点分析了整流器和逆变器的协调控制策略，始终保持SPWM高调制度，达到励磁电压调节的快速响应和高分辨率。
The regulation for ultrasonic modulation of laser pulse spikes and the influence of modulation on drilling are studied.
对激光脉冲尖峰超声调制的一些规律及对打孔的影响进行了研究。
The sinusoidal pulse-width modulation (SPWM) control strategy is employed in the inverter of proposed converter to achieve well dynamic regulation.
正弦脉宽调制（SPWM）控制策略，采用建议的逆变器转换器来实现良好的动态调节。
The theory of AC frequency modulation for motor speed regulation technology, its applied procedure and actual effect in dedusting fan of converter are stated.
介绍了交流变频调速技术的原理、在转炉除尘风机上的实施过程和使用效果。
The system adopts direct digital synthetic (DDS) technology for building the sine wave generator to realize continuous regulation of amplitude, frequency and phase modulation.
系统采用直接数字合成（DDS）技术构建正弦波发生器，实现幅值、频率、相位等连续调节；
The excellent properties of the TPFT and its function in the output frequency regulation, voltage regulation and PWM modulation control are stated in detail.
详细叙述了三电平pw M变频器在输出调频、调压和PWM调制控制中的作用以及三电平pw M变频器的优异性能。
The excellent properties of the TPFT and its function in the output frequency regulation, voltage regulation and PWM modulation control are stated in detail.
详细叙述了三电平pw M变频器在输出调频、调压和PWM调制控制中的作用以及三电平pw M变频器的优异性能。
应用推荐