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- The OFDM inner receiver design should take account of synchronization issue, such as symbol boundary, carrier frequency offset and sampling frequency offset. 内接收机所要考虑的问题有符码边界偏移、载波频率偏移和取样时脉偏移等同步问题。
- The sensitivity of sampling frequency offset in orghogonal frequency division multiplexing (OFDM) systems was analyzed and a pilots based estimation of sampling frequency offset was proposed. 通过建立数学模型,推导出存在采样频率偏移时系统信噪比的近似计算公式,定量地估计采样频率误差对系统性能的影响。
- The study show that symbol timing offset and sampling frequency offset would introduce inter-symbol interference, frequency offset of carriers would result in intercarrier interference. 分析表明:定时偏差和采样频率偏差会引入码间干扰,载波频率偏差会导致载波间干扰。
- sample frequency offset 采样钟频率偏移
- Effects of sampling frequency offset on satellite navigation receivers 采样频率偏移对卫星导航接收机的影响
- Carrier frequency offset is one of the key problems in OFDM system. 摘要载波频率偏移是OFDM系统实现的关键问题之一。
- The results indicate that frequency offset can be obtained robustly. 海量实验数据证明,对应的数据是鲁棒的。
- sampling frequency offset 采样频率偏差
- The simulation for QPSK shows that the algorithm can estimate the carrier phase and frequency offset accurately and reduce the system BER effectively. 结果表明,用该算法可以精确估计载波相位和频差,有效地降低系统的误码率。
- In pulse code modulation,a spurious signal formed from beats between the signal frequency and the sample frequency. 在脉冲编码调制中,信号频率和取样频率之间的差拍所引起的伪信号。
- The ways of estimating the frequency offset and Doppler spread width in WCDMA system are studied in this paper. 本文主要研究了WCDMA(宽带码分多址)系统中频偏和最大多普勒频偏的估计方法。
- It has previously been shown that PCC substantially reduces the sensitivity of OFDM to carrier frequency offset. PCC能够显著地降低OFDM对载波频偏的敏感性。
- In pulse code modulation, a spurious signal formed from beats between the signal frequency and the sample frequency. 在脉冲编码调制中,信号频率和取样频率之间的差拍所引起的伪信号。
- A novel scheme of estimating the carrier frequency offset in CDMA system with the continuous pilot channel is proposed. 摘要本文针对存在载频频偏的CDMA系统,提出了一种新的估计该固有频偏的方法。
- A new frequency offset and channel estimation joint algorithm for OFDM system is proposed. 摘要针对正交频分复用系统提出一种新的频偏与信道联合估计的算法。
- The image forming and disposing time delay of TV tracker and sample frequency affect tracking capability of TV tracking system directly. 由于电视跟踪器图像信号建立、图像处理等原因造成的延时和采样频率直接影响了电视跟踪伺服系统的性能。
- Based on the fixed sampling interval technique, an improved phasor computing algorithm is proposed to correct the errors caused by DFT in the presence of frequency offset. 推导出一种在定间隔采样基础上能够有效消除非额定频率下离散傅里叶变换(DFT)算法产生的频率泄漏影响的相量校正算法。
- It was proposed that oversampling is necessary by analyzing the influence of different sample frequency on the decomposition of sine wave. 对单频正弦信号的分析结果表明,应用局域波分解对信号进行分析时,要对信号进行过采样。
- Then the phase trajectory is estimated based on MMSE criterion, and the frequency offset and initial phase can be achieved. 在此基础上,基于MMSE准则计算载波相位的轨迹,得到频差和初始相位。
- Operator-based SPC control charts are optimized for statistically valid sample frequency, sample size, and appropriate chart type. 以作业员为主执行的控制图表,须依据其样本频率、样本大小和相应的图表类别而择优选定。