CDMA for cellular systems can be described as follows．As with FDMA，each cell is allocated a frequency (71)，which is split into

admin2019-05-15 61

问题 CDMA for cellular systems can be described as follows．As with FDMA，each cell is allocated a frequency (71)，which is split into two parts，half for reverse(mobile unit to base station)and half for (72) (base station to mobile uni0．For full—duplex (73) ，a mobile unit uses both reverse and forward channels．Transmission is in the form of direct—sequence spread (74)，which uses a chipping code to increase the data rate of the transmission，resulting in an increased signal bandwidth．Multiple access is provided by assigning (75) chipping codes to multiple users，SO that the receiver can recover the transmission of an individual unit from multiple transmissions．
(71)

选项 A、wave
B、signal
C、bandwidth
D、domain

答案C

解析

转载请注明原文地址:https://www.kaotiyun.com/show/1FDZ777K

本试题收录于：网络工程师上午基础知识考试题库软考中级分类

网络工程师上午基础知识考试

软考中级

相关试题推荐

随机试题

最新回复(0)

CDMA for cellular systems can be described as follows．As with FDMA，each cell is allocated a frequency (71)，which is split into

网络工程师上午基础知识考试

软考中级

ItshouldgowithoutsayingthatthefocusofUMLismodeling.However,whatthatmeans,exactly,canbeanopen-endedquestion．

(71)analysisemphasizesthedrawingofpictorialsystemmodelstodocumentandvalidatebothexistingand/orproposedsystems.U

NAT英文全称是“NetworkAddressTranslation”，中文意思是“网络地址转换”，它是一个IETF(InternetEngineeringTaskForce,Internet工程任务组)标准，允许一个整体机构以一个公用IP(

PPP(Point-to-PointProtocol)是SLIP(SerialLineIPprotocol)的继承者，它提供了跨过同步和异步电路实现路由器到路由器(router-to-router)和主机到网络(host-to-network)的连

阅读以下说明，回答问题1～4，将解答填入对应栏内。虚拟专用网是虚拟私有网络(VirtualPrivateNetwork，VPN)的简称，它是一种利用公共网络来构建的私有专用网络。对于构建VPN来说，网络隧道(Tunneling)技术是个关键技术

Bluetoothisauniversalradiointerfaceinthe(71)frequencyhandthatenablesportableelectronicdevicestoconnectandcommun

In　the　open　systems　interconnection(OSI)reference　model,　"layer"　means　one　of　seven　conceptually　complete,(71)arranged　groups

The　most　accurate　and　most　boring　way　to(66)Java　is　that　it　is　a　new　computer　programming　language　developed　by　Sun　Microsystems

中小型企业

A．限制水、钠摄入B．5%碳酸氢钠溶液静注C．保持水电解质平衡，增加营养预防感染D．10%葡萄糖溶液静滴E．血液滤过

地下燃气管道阀门吊装时，绳索不得拴在(　　)。

期货交易所可以发布价格预测信息。()

甲有限责任公司的股东乙公司准备购买一套生产设备，乙公司请求甲公司为自己提供担保。当甲公司股东会审议此请求时，下列情形可以通过的是()。

北京2022年冬奥会和冬残奥会吉祥物发布仪式于2019年9月17日晚在北京首钢园区国家冬季运动训练中心冰球馆隆重举行。北京冬奥会吉祥物“冰墩墩”是以（）为原型进行设计创作的。

设f(x)在[a，b]上连续，证明：∫abf(x)dx∫xbf(y)dy＝[∫abf(x)dx]2．

Mostyoungpeopleenjoysomeformofphysicalactivity.Itmaybeagameofsome【B1】______—football,hockey,golf,ortennis.It

FrameRelayissimplifiedformof(71),similarinprincipleto(72),inwhichsynchronous,framesofdataareroutedtodifferent

CDMA for cellular systems can be described as follows．As with FDMA，each cell is allocated a frequency (71)，which is split into

网络工程师上午基础知识考试

软考中级

ItshouldgowithoutsayingthatthefocusofUMLismodeling.However,whatthatmeans,exactly,canbeanopen-endedquestion．

(71)analysisemphasizesthedrawingofpictorialsystemmodelstodocumentandvalidatebothexistingand/orproposedsystems.U

NAT英文全称是“NetworkAddressTranslation”，中文意思是“网络地址转换”，它是一个IETF(InternetEngineeringTaskForce,Internet工程任务组)标准，允许一个整体机构以一个公用IP(

PPP(Point-to-PointProtocol)是SLIP(SerialLineIPprotocol)的继承者，它提供了跨过同步和异步电路实现路由器到路由器(router-to-router)和主机到网络(host-to-network)的连

阅读以下说明，回答问题1～4，将解答填入对应栏内。虚拟专用网是虚拟私有网络(VirtualPrivateNetwork，VPN)的简称，它是一种利用公共网络来构建的私有专用网络。对于构建VPN来说，网络隧道(Tunneling)技术是个关键技术

Bluetoothisauniversalradiointerfaceinthe(71)frequencyhandthatenablesportableelectronicdevicestoconnectandcommun

In the open systems interconnection(OSI)reference model, "layer" means one of seven conceptually complete,(71)arranged groups

The most accurate and most boring way to(66)Java is that it is a new computer programming language developed by Sun Microsystems

中小型企业

A．限制水、钠摄入B．5%碳酸氢钠溶液静注C．保持水电解质平衡，增加营养预防感染D．10%葡萄糖溶液静滴E．血液滤过

地下燃气管道阀门吊装时，绳索不得拴在( )。

期货交易所可以发布价格预测信息。()

甲有限责任公司的股东乙公司准备购买一套生产设备，乙公司请求甲公司为自己提供担保。当甲公司股东会审议此请求时，下列情形可以通过的是()。

北京2022年冬奥会和冬残奥会吉祥物发布仪式于2019年9月17日晚在北京首钢园区国家冬季运动训练中心冰球馆隆重举行。北京冬奥会吉祥物“冰墩墩”是以（）为原型进行设计创作的。

设f(x)在[a，b]上连续，证明：∫abf(x)dx∫xbf(y)dy＝[∫abf(x)dx]2．

Mostyoungpeopleenjoysomeformofphysicalactivity.Itmaybeagameofsome【B1】______—football,hockey,golf,ortennis.It

FrameRelayissimplifiedformof(71),similarinprincipleto(72),inwhichsynchronous,framesofdataareroutedtodifferent

In　the　open　systems　interconnection(OSI)reference　model,　"layer"　means　one　of　seven　conceptually　complete,(71)arranged　groups

The　most　accurate　and　most　boring　way　to(66)Java　is　that　it　is　a　new　computer　programming　language　developed　by　Sun　Microsystems

地下燃气管道阀门吊装时，绳索不得拴在(　　)。