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Chapter 4: Study and develop DS-CDMA full digital intermediate frequency receiver based on FPGA implementation.

研究了多用户接入的协议和算法，推导了CDMA时隙ALOHA系统的吞吐量和时延性能。

Finally, the paper studies the signal processing of the detecting system , the key point of which is the design of intermediate frequency amplifiers.

最后，介绍了本系统信号处理的工程实现，主要包括窄、宽中频放大器的设计和实现。

A software and hardware design method of electric accessory putting inside intermediate frequency breaker were introduced.

介绍了一种中频断路器内置的电量附件的软硬件设计方案。

The noise of Trial pilots was mainly intermediate or high frequency, and that of Riveters was high frequency.

试飞车间的噪声为稳态噪声，主要是以中高频为主，铆工车间的噪声为非稳态噪声，主要是以高频为主。

The key content of the whole essay is that it analyses frequency modulation, intermediate frequency,

本文的核心内容主要是系统分析了中频，调频波，数字模拟转换，模拟数字转换。

It is the domestic test system of the generator test station of intermediate frequency of the certain Military industry enterprise.

由于直流电动机具有极好的运行性能和控制特性，所以直流调速系统是自动调速系统的主要形式。

Besides, when digital system is employed, the huge relative bandwidth signal can be generated on intermediate frequency.

此外，数字方法还可以在中频上产生出相对带宽很大的信号。

The research of this dissertation is based on the demands of DSSS narrowband interference suppression intermediate frequency digitalized receiver.

本文结合中频数字化抗干扰接收机的后续发展需求，主要对DSSS系统抗干扰技术进行深入地探讨。

Low or intermediate frequency combustion instability generally involves the interaction of several components of an engine system.

低频或中频燃烧不稳定性通常包含发动机系统中几个组件的相互作用。

Objective To observe the preventive effect of sine modulate intermediate frequency current on the intestinal adhesion.

目的：观察正弦调制中频电流对肠粘连形成的预防作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。