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
60
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.
(74)
选项
A、structure
B、spectrum
C、stream
D、strategy
答案
B
解析
转载请注明原文地址:https://kaotiyun.com/show/nFDZ777K
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.
ItshouldgowithoutsayingthatthefocusofUMLismodeling.However,whatthatmeans,exactly,canbeanopen-endedquestion.
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
(71)analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. U
(71)analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. U
In the open systems interconnection(OSI)reference model, "layer" means one of seven conceptually complete,(71)arranged groups
随机试题
关于Diffie-Hellman算法描述正确的是()
施工企业授权某采购员到乙公司采购钢材,但该采购员用盖有甲施工企业公章的空白合同文本与乙公司订立了购买水泥的合同,则该合同()。
The"standardofliving"ofanycountrymeanstheaverageperson’sshareofthegoodsandserviceswhichthecountryproduces.
开发建设单位申请在某城市中心E进行旧区改造,建设商贸、办公建筑项目。该地段西侧为风貌性建筑,集中成片,并有小游园一处,现已批准公布为“保护近代西式住宅风貌为主的历史街区”的重点保护区。拟改造规划可用地面积约3hm2,为历史街区保护的建设控制地带,其中有几幢
下面各项中,不是《消费者权益保护法》立法目的的是()。
南京地貌特征属宁镇扬丘陵地区,以丘陵为主。()
有个人发现图书馆的那本《大英百科全书》的第21、42、64.65、121、137、138、190页对他有用,便把这几页偷偷地撕下带走了。那他一共撕去了()。
[*]
A、Showtheadd/dropformtoProfessorSmith.B、GoonattendingProfessorSmith’sclass.C、Cometotheregistrationofficewitht
OnefeatureofnewfoundwealthinthedevelopingworldhasbeentheembraceofWesternluxurylabels.Butsincetheglobalecono
最新回复
(
0
)