现代跳频系统需要传输大量数据信息,传统调制方式由于频谱利用率低而不适合跳频系统的高速数据传输。
Modern FH communication system need transmit a mass of data, traditional modulations are no longer suitable for high-speed data transmitting in FH system due to low spectrum efficiency.
本文通过对传统滞环电流控制器的分析,结合电压空间矢量调制方式,提出一种改进的滞环电流控制方法。
This paper presents a sort of improved hysteresis current control method through analyzing the traditional hysteresis current controller and combining voltage space vector modulate method.
以多进制相位调制方式采用这种波形结构进行了仿真实验和湖水试验,都获得了比传统的波形结构更低的误码率。
Emulate experiments and lake experiment obtained lower error code rate than traditional waveform design method using this waveform structure with multiple phase shift key modulation.
与传统的单载波调制方式相比,OFDM技术可以有效地抵抗信道多径干扰,提高系统的传输速率。
Compared with the traditional scheme of single-carrier modulation, OFDM technology has more effective anti-jamming ability and achieves higher transmission rate.
由于传统谐振直流环节逆变器只能采用离散脉冲调制方式,输出波形中含有丰富的低次谐波,严重影响输出性能。
The output waves of traditional resonant DC-Link inverter have too much low frequency harmonic waves which affect the output performance, because it can only use DPM control.
分析了传统的PWM_ON调制方式对无刷直流电动机在非换相期间由于截止相的反并联二极管续流而导致转矩脉动的原因。
The torque ripple caused by diode freewheeling of the inactive phase during non-commutation state of PM brushless DC motor(BLDCM)when using the PWM_ON type of pulse width modulation was analyzed.
针对传统数字调制信号频谱扩展问题,提出具有相位突变特性的时相调制(TPM)方式。
Aiming at the spectrum spread problem of traditional digital modulation signals, a time-phase modulation (TPM) method with abrupt phase change characteristic is proposed.
针对传统的最小频移键控(MSK)的调制解调方式,提出一种基于甚高速硬件描述语言(VHDL)的数字式MSK调制解调模型。
For the conventional modulation and demodulation of Minimum Frequency Shift Keying (MSK), the new models for modu - lation and demodulation on digital MSK based on VHDL are developed.
针对传统的最小频移键控(MSK)的调制解调方式,提出一种基于甚高速硬件描述语言(VHDL)的数字式MSK调制解调模型。
For the conventional modulation and demodulation of Minimum Frequency Shift Keying (MSK), the new models for modu - lation and demodulation on digital MSK based on VHDL are developed.
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