首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
计算机
CDMA for cellular systems can be described as follows.As with FDMA,each cell is allocated a frequency (71),which is split into
CDMA for cellular systems can be described as follows.As with FDMA,each cell is allocated a frequency (71),which is split into
admin
2019-05-15
51
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://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
0
网络工程师上午基础知识考试
软考中级
相关试题推荐
ItshouldgowithoutsayingthatthefocusofUMLismodeling.However,whatthatmeans,exactly,canbeanopen-endedquestion.
(71)analysisemphasizesthedrawingofpictorialsystemmodelstodocumentandvalidatebothexistingand/orproposedsystems.U
销售部的网络号是(1),广播地址是(2):技术部的网络号是(3),广播地址是(4);每个子网可用的IP地址有(5)个。在网关计算机/etc/sysconfig/network-scripts/目录中有以下文件,运行某命令可以启动网络,该命令是(9),其
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
CDMAforcellularsystemscanbedescribedasfollows.AswithFDMA,eachcellisallocatedafrequency(71),whichissplitinto
CDMAforcellularsystemscanbedescribedasfollows.AswithFDMA,eachcellisallocatedafrequency(71),whichissplitinto
In the open systems interconnection(OSI)reference model, "layer" means one of seven conceptually complete,(71)arranged groups
In the open systems interconnection(OSI)reference model, "layer" means one of seven conceptually complete,(71)arranged groups
In the open systems interconnection(OSI)reference model, "layer" means one of seven conceptually complete,(71)arranged groups
随机试题
A.糖浆B.硬脂酸镁C.乙烯一醋酸乙烯共聚物D.卡波姆E.羧甲基淀粉钠作为助悬剂的是
在对建筑外墙装饰材料进行的防火检查中,下列不符合相关规范要求的是()。
下列关于下岗失业人员小额担保贷款的说法,正确的是()。
某社会团体与某私立学校共同出资依法设立一合伙企业,经营文具用品。两年后,因经营亏损,该合伙企业财产不足以清偿全部债务。下列关于各合伙人承担责任的表述中,符合《合伙企业法》规定的有()。
wifi:网线
党的十七大报告指出,深入贯彻落实科学发展观,必须坚持
下列关于路由器技术指标的描述中,错误的是
考生文件夹下存在一个数据库文件“samp3.accdb”,里面已经设计好表对象“tStud”和“tScore”,同时还设计出窗体对象“fStud”和子窗体对象“fScore子窗体”。请在此基础上按照以下要求补充“fStud”窗体和“fScore子窗体”子窗
一个女孩走过一片草地,看见一只蝴蝶被刺弄伤了。她小心地为它【C1】______掉刺,让它飞向大自然。后来蝴蝶为了报恩,变成了一位仙女。仙女对小女孩说:“因为你很【C2】______,请你许个愿,我可以帮助你实现愿望。”小女孩想了想说:“我想要快乐。”于是仙
Theworld’senvironmentissurprisinglyhealthy.Discuss.Iftherewereanexaminationtopic,moststudentswouldtearitapart
最新回复
(
0
)