OFDM的英文是()A.OverloadFrequencyDivisionMultiplexingB.Orthogonal?Frequency?Division?MultiplexingC.Overwhelming?Frequency?DivisionMultiplexingD.Outstanding?Frequency?Division?Multiplexing

题目

OFDM的英文是()

A.OverloadFrequencyDivisionMultiplexing

B.Orthogonal?Frequency?Division?Multiplexing

C.Overwhelming?Frequency?DivisionMultiplexing

D.Outstanding?Frequency?Division?Multiplexing

相似考题

1.在LTE系统中，为了支持成对的和不成对的频谱，支持频分双工(Frequency Division Duplex，FDD)模式和时分双工(Time Division Duplex，TDD)模式。LTE支持两种类型的无线帧结构：类型1，适应于全双工和半双工的FDD模式，类型2适应于TDD模式。()

2.对于LTE物理层的多址方案，在下行方向上采用基于循环前缀(Cyclic Prefix，CP)的正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)，在上行方向上采用基于循环前缀的单载波频分多址(Single Carrrier-Frequency Division Multiplexing Access，SC-FDMA)。()

3.F－OFDM英文全称是Flexible Orthogonal Frequency Division Multiplexing,中文叫灵活的正交频分复用。()此题为判断题(对，错)。

4.在通信专业中，WDM的英文全称是（），“吞吐量”英文通常翻译为（）。A．Wierless Digital Modulation B．Wave Division Multiplexing C．Wavelength Division Multiplexing D．Wireless Data Modulation A．traffic flow B．rate C．throughout D．throughput

更多“OFDM的英文是()A.OverloadFrequencyDivisionMultiplexingB.Orthogonal?Frequency?Division?MultiplexingC.Overwhelming?Frequency?DivisionMultiplexingD.Outstanding?Frequency?Division?Multiplexing”相关问题

  • 第1题：

    Which two statements are true about optical networks?()

    A. SONET and SDH both use time-division multiplexing.

    B. An optical transport network system uses time-division multiplexing.

    C. SONET and SDH both use wavelength-division multiplexing.

    D. An optical transport network system uses wavelength-division multiplexing.


    参考答案：A, D

  • 第2题：

    The traditional way of allocating a single channel among multiple competing users is to chop up its ( ) by using one of the multiplexing schemes such as FDM (Frequency Division Multiplexing). If there are N users, the bandwidth is divided into N equal-sized portions, with each user being assigned one portion. Since each user has a private frequency ( ), there is no interference among users.When there is only a small and constant number of users, each of which has a steady stream or a heavy load of ( 本 题 ), this division is a simple and efficient allocation mechanism. A wireless example is FM radio stations. Each station gets a portion of the FM band and uses it most of the time to broadcast its signal.However, when the number of senders is large and varying or the traffic is ( ), FDM presents some problems. If the spectrum is cut up into N regions while fewer than N users are currently interested in communicating, a large piece of valuable spectrum will be wasted. If more than N users want to communicate, some of them will be denied ( ) for lack of bandwidth.?

    A. traffic
    B. date
    C. bursty
    D. flow

    答案：A
    解析：

  • 第3题：

    Pitch is produced by frequency of vibration of the vocal cords. The higher the frequency, the higher the pitch.（）


    正确答案:正确

  • 第4题：

    Time division multiplexing时分多路复用


    正确答案: 一种通用的多路复用技术，容许多个发送方通过公共介质发送，各发送方轮流使用介质。

  • 第5题：

    DWDM英文全称Dense Wavelengh Division Multiplexing，中文释义为（）。


    正确答案:密集波分复用

  • 第6题：

    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

    正确答案:B

  • 第7题：

    OFDM的英文全称是（）

    • A、Orthogonal Frequency Division Multiplexing
    • B、Outstanding Frequency Division Multiplexing
    • C、Overwhelming Frequency Division Multiplexing
    • D、Orthogonal Frequency Division Modulation

    正确答案:A

  • 第8题：

    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)

    正确答案:A

  • 第9题：

    单选题
    The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of（）.
    A

    High frequency pulses

    B

    Combinations of high and low frequency pulses

    C

    The same frequency for all stations in a chain

    D

    Varied long and short pulses


    正确答案： B
    解析： 暂无解析

  • 第10题：

    单选题
    When it is accepted to remain on the frequency indicated，you should say（）.
    A

    Standing by on VHF frequency

    B

    Coming to VHF frequency

    C

    VHF frequency. is the best place for you to stay by

    D

    remaining in frequency. and do not change


    正确答案： A
    解析： 暂无解析

  • 第11题：

    多选题
    Which two statements are true about optical networks?（）
    A

    SONET and SDH both use time-division multiplexing.

    B

    An optical transport network system uses time-division multiplexing.

    C

    SONET and SDH both use wavelength-division multiplexing.

    D

    An optical transport network system uses wavelength-division multiplexing.


    正确答案： B,D
    解析： 暂无解析

  • 第12题：

    名词解释题
    frequency division multiplexing频分多路复用

    正确答案： 一种常用的多路复用技术，容许多个发送方通过公共介质发送。由于每个发送方使用不同的频率，多个发送方能同时发送而不会冲突。
    解析： 暂无解析

  • 第13题：

    The use of pulse groups and extremely precise timing at each Loran-C station makes possible the use of ______．

    A.High frequency pulses

    B.Combinations of high and low frequency pulses

    C.The same frequency for all stations in a chain

    D.Varied long and short pulses


    正确答案：C

  • 第14题：

    Pitch is produced by frequency of vibration of the vocal cords. The higher the frequency, the higher the pitch.（）

    A对

    B错


    对
    略

  • 第15题：

    frequency division multiplexing频分多路复用


    正确答案: 一种常用的多路复用技术，容许多个发送方通过公共介质发送。由于每个发送方使用不同的频率，多个发送方能同时发送而不会冲突。

  • 第16题：

    LTE FDD（Frequency Division Duplexing，FDD）采用的是（）

    • A、频分双工
    • B、时分双工
    • C、码间干扰
    • D、多址干扰

    正确答案:A

  • 第17题：

    对于LTE物理层的多址方案，在下行方向上采用基于循环前缀（Cyclic Prefix，CP）的正交频分复用（Orthogonal Frequency Division Multiplexing，OFDM），在上行方向上采用基于循环前缀的单载波频分多址（Single Carrrier-Frequency Division Multiplexing Access，SC-FDMA）。在上行方向上采用基于循环前缀的单载波频分多址（Single Carrrier-Frequency Division Multiplexing Access，SC-FDMA）。


    正确答案:正确

  • 第18题：

    射频识别技术的英文全称是Radio Frequency Identification缩写（）


    正确答案:RFID

  • 第19题：

    802.11b是基于正交频分复用（Orthogonal Frequency Division Multiplexing，简称OFDM）技术的协议。


    正确答案:错误

  • 第20题：

    跳频为（）。

    • A、frequency hopping
    • B、frequency spreading
    • C、frequency sequence
    • D、chirp

    正确答案:A

  • 第21题：

    填空题
    射频识别技术的英文全称是Radio Frequency Identification缩写（）

    正确答案： RFID
    解析： 暂无解析

  • 第22题：

    判断题
    802.11b是基于正交频分复用（Orthogonal Frequency Division Multiplexing，简称OFDM）技术的协议。
    A

    对

    B

    错


    正确答案： 错
    解析： 暂无解析

  • 第23题：

    判断题
    Pitch is produced by frequency of vibration of the vocal cords. The higher the frequency, the higher the pitch.（）
    A

    对

    B

    错


    正确答案： 对
    解析： 暂无解析

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