定时抖动 meaning in Chinese
timing jitter
Examples
- By the eye diagram pattern , we have researched the ideal channel ' s respond - nyquist pulse , and have got its eye diagram model . based on this , a type of base - band codes called ijf codes have been derived
并由此导出一种没有码间干扰和定时抖动的基带信号码型，称为ijf ( intersymbol - interferenceandjirterfree )信码。 - Because the qam signal which is small roll - up factor has big timing - error jitter in steady state that result in big timing jitter , an expression of impulse response for digital prefilter is deduced and a kind of sub - optimum design method for digital prefilter is proposed in this paper
针对匹配滤波器滚降因子较小的qam信号的稳态定时误差信号抖动较大，而造成较大定时抖动的情况。推导了一种用于减少定时抖动数字预滤波器的冲激响应表达式，并且提出一种数字预滤波器的设计方法，设计了一种优化数字预滤波器。 - Design a kind of sub - optimum digital prefilter . through the simulation of timing recovery loop which is n ' t added prefilter and which is added prefilter , discuss the convergence characteristic and compare the relation between timing jitter and signal to noise ratio , the relation between timing jitter and noise bandwidth of loop , the relation between symbol error ratio and signal to noise ratio
通过对加预滤波器后的定时恢复环的仿真，讨论了环路的收敛情况，比较了所设计的数字预滤波器和无预滤波器时环路定时抖动与信噪比、定时抖动与环路噪声带宽、误码率与信噪比的数量关系，证实所设计的数字预滤波器对减少定时抖动非常有效。 - By theory and practice simulation , the several types of constant envelope modulation techniques are analyzed and compared , including theirs modulation principle , phase path , the modulated wave envelope , power spectrums , error bit rate and the influence of its power spectrums of the band - limited and non - linear , etc . especially we have researched the ijf - oqpsk modulation technique , and the performance of its inter - symbol interference and time jitter free , and its strongly resisting of spectral spreading
结合理论和实验仿真结果，分析讨论了卫星通信中的各种恒包络调制技术，对它们的调制原理，相位路径，已调波包络，功率谱密度，误码性能，以及带限非线性信道对其功率谱的影响等方面都作了研究和比较。特别研究了ijf ? oqpsk在消除码间干扰和定时抖动方面的性能及其优良的旁瓣特性和抑制频谱扩展特性。