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
87
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.
(73)
选项
A、connection
B、transmission
C、compromise
D、communication
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/9FDZ777K
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
网络负载平衡(NetworkLoadBalancing)的核心是位于网络适配器驱动和(1)之间的WLBS.SYS的筛选器驱动。它采用一种(2),根据传入客户端的(3),以统计方式将其映射到群集主机。当发现到达的数据包时,所有主机同时执行这种映射,以快速
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(
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
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
码分多址通信系统是如何实现用户频率资源共享的?
民族问题的核心是()
短期偿债能力的强弱往往表现为()
以下关于操作系统的描述,不正确的是______。
男孩,12岁。肾病综合征初次治疗,口服泼尼松片2mg/(kg·d),2周后尿蛋白转阴,巩固治疗2周开始减量,改成隔日晨顿服2mg/kg,共4周,以后每4~6周减量0.5mg/kg,直至停药。此激素治疗方案为()
下列哪项属于借贷记账法试算平衡的内容?()
A、B、C、D、E、F、G和H这8名武术运动员到美国进行武术表演,将这8个人分成两组——第1组和第2组,每组4个人,每组表演一个动作系列。每一个人根据以下条件都被分到这两组中的某一组。(1)A和D在同一组。(2)B和G不在同一组。
级数的和为_________.
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
「先生、教材のコピー、大変そうですね。______。」「ありだとう。じゃ、頼むよ。」
最新回复
(
0
)