| 1. | In contrast , oversampling converters can be implemented using simple and high - tolerance analog components
然而，过采样转换器的模拟部分可以使用简单和对误差不敏感的器件实现。 |
| 2. | By the uart and rs232 , devising the communication circuit with pc . 7 . by the way of oversampling , making the system stabler
使用了c8051f021的uart口和pc机的rs232口，设计了sw2000和上位机进行通信的电路。 |
| 3. | 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。 |
| 4. | Based on analyzing the error source , a method is proposed in this paper which uses oversampling and average filter to improve the system ’ s stability and accuracy
通过分析误差来源,提出了采用过采样及平均值滤波的方法提高测量精度及稳定性。 |
| 5. | A local nonlinear feedback loop ( lnfl ) technique and a sigma - delta modulator ( sdm ) for promoting highly stable oversampling using the lnfl technique
一种局部非线性回授?路法，以及并利用此一局部非线性回授?路法改良之高稳定性超取样积分三角调变器。 |
| 6. | The architecture and design methods of - modulators are studied . based on it , the bits of quantizer , oversampling - ratio and the orders of modulator have been designed
对调制器的结构和设计技术进行了研究,根据系统要求设计了量化器位数,调制器过采样比和阶数。 |
| 7. | Sigma - delta modulator , combined with oversampling , effectively attenuate the in - band quantization noise in the output signal and enhance the signal - to - noise ratio ( snr ) through the shaping of the quantization error
调制器与过采样相结合,对量化误差噪声进行整形,有效衰减输出信号的带内量化噪声,提高了输出带内信噪比( snr ) 。 |
| 8. | Moreover , sampling at high frequency eliminates the need for abrupt cutoffs in the analog anti - aliasing filters . a technique of noise shaping is used in - converters in addition to oversampling to achieve a high - resolution
由于在- a d转换器中使用噪声整形技术和过采样技术，可以用一个简单的模拟电路加上复杂的数字电路使整个a d达到一个很高的转换精度。 |
| 9. | The mathematic models of sampling and reconstruction are analysed respectively , and an important conclusion is got , that oversampling can decrease high frequence distortion of d / a output signal and the difficulty of designing lowpass filter . as a result the signal quality is improved
分析了采样和重构的数学模型,得出了一个重要结论:过采样可以减少d / a输出信号的高频端衰减失真,可以降低低通滤波器的设计难度,从而提高波形质量。 |
| 10. | The main works and innovations of this thesis are as follows : ( 1 ) based on the oversampling of ofdm frequency response , this paper proposes a channel estimator which combines the comb - pilot - tones partitioning and the fourier transform with the same pilot symbol samples
具体而言，主要有以下六个方面的工作和创新点： ( 1 )利用在ofdm系统中信道的频域响应是过采样的特性，提出了在频域内用均匀梳状分布的导频符号和与导频符号数相同点的傅里叶变换相结合的信道估计方法。 |
