通信系统

Based on the special design requirements of high frequency circuits in communication systems, the simulations of the process flow and physical characteristics of small-scale (the base width is under 100 nm),ultra-high frequency(the characteristic frequency is upon 15 GHz) bipolar transistors were simulated.

基于通信系统中射频电路设计的特殊要求，对小尺寸(基区宽度低于100nm)、超高频(特征频率高于15GHz)双极晶体管工艺制程和器件的物理特性进行了模拟，为工艺线流片进行可行性研究。

Data compressed encoding and uncompressed decoding is one of the key technologies applied widely in digitalcommunication system at present .

数据压缩编码技术是目前广泛应用的数字通信系统中的关键技术之一。

In ACF/VTAM, an unformatted session-initiation request for a session between two logical units.

在IBM的通信系统ACF/VTAM中，两个逻辑单元之间的一次非格式化的话路启始

Communication System Simulation : Unipolar zero waveform and power spectrum, duty cycle of 50%.

通信系统仿真：单极性归零波形及其功率谱，占空比为50％。

At the same time, for the inter-operation scene between E-UTRAN and UTRAN, this system designs the mapping of EPS QoS Class Identifier and Universal Mobile Telecommunications System QoS parameters.

同时，针对未来UTRAN与E-UTRAN网络之间的互操作场景，设计了EPS的QoS等级标识参数与通用移动通信系统QoS参数之间的合理映射。

An Unscented Kalman Filter based noncoherent detection method for Chaos-Shift-Keying communication system is proposed in this paper.

摘要基于UKF算法，该文提出一种CSK通信系统的非相干检测方法。

A method and apparatus are provided for scheduling uplink data transmission in a mobile communication system.

提供了一种在移动通信系统中调度上行链路数据传输的方法和装置。

The main task of this thesis is to design a voice compression/decompression communication system based on the AMBE-2000TM vocoder chip.

本文完成的任务是基于AMBE-2000TM声码器芯片设计了一个语音压缩/解压通信系统。

It also improves the AES algorithm in order to fit the different output data rate of vocoder. This paper analyzed the characteristics of the voice communication system firstly.

本文首先对语音通信系统的特点进行了分析，在此基础上提出了如何选择对称密钥密码算法和公开密钥密码算法。

These include transportation and communication systems, water and power lines and public institutions including schools and hospitals.

包括交通、通信系统、水电管道和包括学校和医院的公共机构。

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％。