CDMA (Code Division Multiple Access)
CDMA (Code Division Multiple Access)
相关考题：
TDD表示的含义( )。 A. transfer control protocolB. time division duplexC. time division synchronous CDMAD. time division multiple access
You are writing an application that uses isolated storage to store user preferences.The application uses multiple assemblies.Multiple users will use this application on the same computer.You need to create a directory named Preferences in the isolated storage area that is scoped to the current Microsoft Windows identity and assembly.Which code segment should you use?（）A.B.C.D.
Circuit-switching technology is used in Publish Switched Telephone Network(PSTN), Global System for Mobile Communications(GSM) and code Division Multiple Access (CMDA) .It is a ( ) information transfer mode.A.connection orientedB.connectionlessC.high bandwidth utilizationD.poor real-time
CDMA for cellular system can be described as follows. As with FDMA, each cell is allocated a frequency （71） , when is split into two parts, half for reverse (mobile unit to base station) and half for （72） (base station to mobile unit). For full-duplex （73） , a mobile unit both reverse and forward channels. Transmission is in the form. of direct-sequence spread （74） , which used a chipping code to increase the data rate of the transmission, resulting is 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.A.wareB.signalC.bandwidthD.domain
Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?() A. optical technology for transmitting up to 32 channels over multiple fiber strandsB. optical technology for transmitting up to 16 channels over multiple fiber strandsC. a WDM system that is compatible with EDFA technologyD. a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .
Circuit-switching technology is used in Public Switched Telephone Network（PSTN）, Global System for Mobile Communications（GSM） and Code Division Multiple Access（CDMA）. It is a （ ） information transfer mode.A.Connection orientedB.connectionlessC.High bandwidth utilizationD.Poor-real-time
CDMA for cellular systems can be described as follows.As with FDMA，each cell is allocated a frequency（ ），which is split into two parts,half for reverse（mobile unit to base station）and half for（ ）（base station to mobile unit）.For full-duplex（ ）.a mobile unit uses both reverse and forwardchannels.Transmission is in the form of direct-sequence spread（本题）,which uses a chipping code to increase the data rate of the transmission,resulting inan increased signal bandwidth.Multiple access is provided by assigning（ ）chipping codes to multiple users,so that the receiver can recover the transmission of an individual unit from multiple transmissions.A.structureB.spectrumC.streamD.strategy
根据《2GHzTD-SCDMA数字蜂窝移动通信网工程验收暂行规定》，WCDMA（Wideband Division Multiple Access）意思是（）。A、宽带码分多址接入B、码分多址接入C、时分多址接入D、时分同步码分多址接入
Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?（）A、optical technology for transmitting up to 32 channels over multiple fiber strandsB、optical technology for transmitting up to 16 channels over multiple fiber strandsC、a WDM system that is compatible with EDFA technologyD、a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .
FDM的英文是（）A、Overload Frequency Division Multiplexing B、Orthogonal Frequency Division Multiplexing C、Overwhelming Frequency Division Multiplexing D、Outstanding Frequency Division Multiplexing
OFDM的英文全称是（）A、Orthogonal Frequency Division MultiplexingB、Outstanding Frequency Division MultiplexingC、Overwhelming Frequency Division MultiplexingD、Orthogonal Frequency Division Modulation
Acceptance of deliverables to multiple locations requires which type of sign off？（）A、Design AcceptanceB、Code AcceptanceC、Module AcceptanceD、Site Acceptance
WDM与（）本质是相同的。A、OFDM(optical frequency division multiplexing)B、OTDM(optical time division multiplexing)C、CDM(code division multiplexing)D、EDFA(erbium doped fiber amplifier)
单选题Circuit-switching technology is used in Publish Switched Telephone Network(PSTN), Global System for Mobile Communications(GSM) and code Division Multiple Access (CMDA) . It is a ( ) information transfer mode.Aconnection orientedBconnectionlessChigh bandwidth utilizationDpoor real-time
单选题TDD表示的含义（）。Atransfer control protocolBtime division duplexCtime division synchronous CDMADtime division multiple access
单选题In order to link data centers, a customer is evaluating the installation of fiber optic cable between buildings that are 400 meters apart. The installation will require multiple patch panels and cables. Which of the following is the most critical factor to consider for this installation?（）AI/O rateBbandwidthCsignal lossDDense Wavelength Division Multiplexing (DWDM)
单选题WCDMA的英文全称是Wideband Code Division Multiple Access，即宽带码分多址。其系统带宽是5MHz，码片速率为（）。A1.2288MbpsB1.28MbpsC3.84Mbps
名词解释题CDMA (Code Division Multiple Access)