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- A unit of frequency equal to one cycle per second. 赫兹频率的单位,等于每秒一周
- A unit of frequency equal to one billion(109)hertz. 十亿赫兹频率单位等于十亿(109)
- A unit of frequency equal to1, 000 hertz. 千赫兹频率的单位,等于1000赫兹
- A unit of frequency equal to one billion(109) hertz. 十亿赫兹频率单位等于十亿(109)
- The Continuous Phase Frequency Shift Keying(CPFSK) signaling scheme has been widely used in mobile applications. 连续相位频移键控(CPFSK)信号广泛应用于便携式移动通信系统。
- In this paper, two fractionally-spaced space frequency equalization schemes for the downlink of broadband single-carrier multi-user MIMO-CDMA system are proposed. 该文提出了两种适用于宽带单载波多用户MIMO-CDMA系统下行链路的分数间隔空频均衡接收方案,并进行了理论推导。
- In this paper, a simple method of plotting logarithmic phase frequency response curve for open-loop systems is advanced. 文章给出了绘制开环系统对数相频特性曲线的简便方法。
- Quantization noise analysis of linear phase frequency sampling FIR filters was discussed, and computation formula for measuring quantization noise was described in this paper. 主要分析了线性相位频率采样FIR滤波器中的量化噪声,并给出计算公式。
- Abstract: This paper describes a clock and data recovery(CDR)circuit for RFID tag, and a new phase frequency detector(PFD) is proposed for this CDR circuit for NRZ data. 文章摘要: 提出了一种适用于射频电子标签的时钟数据恢复电路,在电路中提出了一种适用于NRZ数据的新型鉴频鉴相器电路和自适应控制单元,能动态调节边沿检测器中延迟单元的延迟时间,使此时钟数据恢复电路具有大的锁定范围,且有结构简单易实现的特点。
- To combine(a radio-frequency wave) with a locally generated wave of different frequency in order to produce a new frequency equal to the sum or difference of the two. 外差把(一个无线电频率波)与另一个频率不同的局部产生的电波层混合,以产生相当于原来两个的总和或差拍的新频率。
- A low-cost, highly-accurate GPS carrier phase frequency syntonization system (GPS carrier phase-disciplined oscillator, GPSCDO) based on a single-frequency receiver is presented. 摘要:本论文介绍利用单频接收机及GPS载波相位观测量所组成一低成本且高精度的频率同步系统(GPS载波相位训练振荡器)。
- Compared with the conventional frequency domain equalization schemes, the proposed fractionally-spaced space frequency equalization ones have better performance with low complexity. 仿真结果表明,这两种分数间隔空频均衡接收方案都比传统的频域均衡接收方案在性能上有很大的提高,并且复杂度也比较低。
- This thesis proposes a new digital controlled oscillator (DCO) and a new phase frequency detector (PFD) architecture for the all digital phase-locked loop (ADPLL) with low power design. 本论文提出一个新的数位控制频率振荡器及一个新的相位频率侦测器之架构以设计一个低功率的全数位式锁相迴路。
- Phase frequency skip of atomic clock is one of an important factor to restrict accuracy and stability of standard time signal, so its analysis and detection is very important in time keeping work. 原子钟相频跳变是制约标准时间信号准确度和稳定度的关键因素之一,它的分析和检测在守时系统自动化监控中非常重要。
- A single pulsation of an oscillation produced by adding two waves of different frequencies,has a frequency equal to the difference between the two oscillations. 由两种不同频率的波合在一起所产生的每一次跳动,这种跳动的频率为原来两种波的频率的和或差。
- frequency equalization of speech 语音频率均衡
- Noise that affects all transmission frequencies equally is called white noise. 杂讯同等地影响所有传输频率称为白噪音。
- Based on the equal-loudness rune, a speech frequency equalizer is designed combing with the principle of electronic-to-sound transform. 摘要以人耳等响曲线为依据,结合电声转换的原理,设计了一种语音频率均衡电路。
- Continuous Phase Frequency Shift Keying HFR 连续相位移频键控
- Based on the equal-loudness curve, a speech frequency equalizer is designed combing with the principle of electronic-to-sound transform. 以人耳等响曲线为依据,结合电声转换的原理,设计了一种语音频率均衡电路。