通信系统

ABSTRACT Code Division Multiple Access is the preferred multiple accessing mode of the Third Generation Mobile Communication Systems...

码分多址是第三代移动通信系统的优选多址工作方案，但CDMA固有的多址干扰问题限制着系统的容量。

ABSTRACT Code Division Multiple Access is the preferred multiple accessing mode of the Third Generation Mobile Communication Systems, but the inherent multiple-access interference limits its capacity.

码分多址是第三代移动通信系统的优选多址工作方案，但CDMA固有的多址干扰问题限制着系统的容量。

Network centric warfare; network-torpedo ; acoustic communication system ; satellite navigation location system

网络中心战；网络鱼雷；水声通信系统；卫星导航定位系统

Multi-channel data acquisition and communication system is a special use in motion detection device of the analog data acquisition system.

多路数据采集与通信系统是一个使用在特殊的运动检测装置上的模拟量数据采集系统。

In this paper ,the role of smart antenna in future mobile communication system is introduced.

无线系统中的智能天线：本文介绍了智能天线在未来移动通信系统中的重要作用。

This paper analyzes the application of MC-CDMA in a multiple antennas environment and derives an equation for the closed-form asymptotic spectral efficiency of the system with matched filter and linear minimum mean square error front-ends.

该文从信息论的角度分析了MC-CDMA在多天线通信系统中的应用，得到了当采用匹配滤波器检测子和线性最小均方误差检测子的渐进频谱效率的闭式表达，研究了可用于指导系统设计的频谱效率与发送天线数和接收天线数的关系。

Multicarrier and multicarrier CDMA systems are the candidates with a greatapplied foreground for future mobile communications system.Some keytechniques in the two kinds of systems,including the reduction of peak-averagepower ratio and so on,are studied in this dissertation.The main contents ofthe dissertation are as following:(1) The way to constitute a multicarrier signal by using any onecomplementary code from multiphase complementary code pair is proposed,andthe upper bound on crest factor for a multicarrier signal is studied.

多载波及其多载波CDMA系统是未来移动通信系统一种很有应用前景的侯选方案，本文针对这两种系统中的峰平功率比减小等关键技术进行了研究，主要内容包括：(1)提出了利用多相互补码对中任一互补码构成多载波信号的方法，研究了多载波信号峰值因子的上边界。

Handover is the particular function of the cell system, and also is the key character of the mobile communication system, it influents the capability of the mobile system directly.

切换是蜂窝系统所独有的功能，也是移动通信系统的一个关键特征，它直接影响整个系统的性能。

Phan notes that the system automatically reconfigures itself if there is a problem with a hardware channel. Another capability that distinguishes the F-35's communications system from JTRS radios is the ability to schedule, transmit and receive signals that would normally interfere with each other in a time-ordered fashion that avoids co-site issues.

科林。潘指出，系统在遇到硬件通道故障时会自动重新配置。F-35的通信系统区别于JTRS无线电系统的另一个功能是能合理安排收发信号的时机避免相互的信号干扰。

As the construction of Highway system and its necessary facilities, kinds of management information systems , communication systems and OAs widely find their way.

在高速公路路网以及相关配套设施的建设发展过程中，各类通信系统、管理信息系统和办公自动化系统得到了越来越广泛的应用。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。