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- Extracting the in pulse characters based on direct sampling from IF signal and quadrature coherent detection is proposed. 讨论了利用中频直接采样相干检波技术实现信号脉内特征的提取,仿真结果证明了该技术的可行性。
- digital quadrature coherent detection 数字正交相干检波
- Bandpass Sampling Theorem and Digital Quadrature Coherent Detection 带通采样定理与中频采集数字正交检波
- Realization of quadrature coherent detection by direct sampling of IF signal 直接中频采样实现正交相干检波的研究
- Extraction of the In-pulse Characteristics of Signal Based on Direct Sampling from IF signal and quadrature coherent detection 基于中频直接采样正交相干检波技术的信号脉内特征提取
- quadrature coherent detection 正交相干检波
- The principal advantage over the dual filter coherent detection is a four-fold reduction in bandwidth. 与双滤波器相干检波相比的主要优点是带宽减少了四分之三.
- Using the way of homodyne coherent detection, a fiber laser Doppler vibrometer is designed and completed. 采用零差的相干探测方式,设计并实现了一套光纤结构的激光多普勒振动计。
- The differential detection and coherent detection based on space-time block codes and their comparisons are studied. 摘要对基于空时分组码的差分检测算法和相干检测算法进行了研究与对比。
- Quadrature Coherent Phase Shift Keying 正交连贯相移键控
- Simulation results show that the signal-noise ratio (SNR) of coherent detection is lower than that of differential detection when bit error rate (BER) is same. 仿真表明:当误码率(BER)相同时,相干检测的信噪比(SNR)要比差分检测的低;
- With coherent detection, radio frequency (RF) signal can be recovered with simultaneously suppressed second-order distortion and third-order intermodulation. 通过相干检测的方式,可以恢复出不受二阶和三阶干扰的射频信号。
- When BER and constellation are same, the SNRs of coherent detection and differential detection decrease with the increase of the number of transmit antennas and receive antennas. 当误码率和星座图相同时,相干检测和差分检测的信噪比随发射天线和接收天线数量的增加而降低。
- The Digital Quadrature Coherent Detector with the Polyphase Filter 多相滤波法实现的数字正交相干检波器
- Digital Quadrature Coherent Detector with Reduced Polyphase Filter 基于多相滤波简化结构的数字正交相干检波
- We also investigate the benefits and defects of several PMD mitigation methods, and propose a novel method using coherent detection technology to impr... 并且研究了几种偏振模色散抑制方法的优缺点 ,提出了一种全新的相干检测技术来提高补偿性能。
- Analysis of Mirror Frequency in a Quadrature Coherent Detector With a New LPF 一种新低通滤波器法实现正交相检的镜频分析
- Since WCDMA up-link adopt the RAKE receiver using coherent detection system, the exact and Real-time channel fading estimation of the transmitted signal is needed to realize the phase correction and coherent reception. 由于WCDMA系统上行链路采用的是基于相干解调的RAKE接收方案,故要求对信号在多径衰落信道中所经历的衰落作出准确实时的估计,以便在RAKE接收机中实现相位纠偏和相干接收。
- By these measures, optimal coherent detection of MSK for the receiver is simplified and in accordance with the general structure of software radio.It can be easily implemented as well. 该接收机结构简单,并且符合软件无线电接收机的一般结构,能够容易的实现。
- Two PLLs are introduced,one has coherent detection circuit and integral scanning circuit,the other has assistant phase-comparator and scanning generator,and their merits and demerits are compared. 介绍了2种具有扫描捕获电路的锁相环,即具有相干检测电路和积分扫描电路的锁相环和具有辅助鉴相器和扫描发生器的锁相环,并比较了电路各自的优缺点。