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序号 试题内容
1 CDMA的关键技术包括『____』、『____』、『____』和卷积编码、块交织技术、语音编码技术等技术。The
在CDMA系统中，为克服无线的多径传输，采用的 关键技术是（ ）。 2 In the CDMA system, in order to overcome the multipath transmission of radio, the key technologies adopted are ( ).
CDMA系统功率控制子信道插入在前向（ ）中。 14 The power control sub-channel of the CDMA system is inserted into the forward ( ). 多个直放站共用一个施主基站时，该施主基站最 多能带多少直放站主要取决于（ ）。 When multiple repeaters share one donor 15 BTS, the number of repeaters that can be carried by the donor BTS primarily depends on ( ). 直放站扩展了施主基站的覆盖范围，使施主基站 所支持的话务量增加，同时直放站也导致施主基 站覆盖区内移动台的发射功率（ ）。 The repeater expands the coverage of the 16 donor BTS, and increases the traffic supported by the donor BTS. The repeater makes the transmitting power of the MS in the donor BTS coverage area ( ). 直放站扩展了施主基站的覆盖范围，使施主基站 所支持的话务量增加，同时直放站也导致施主基 站的覆盖半径（ ）。 The repeater expands the coverage of the 17 donor BTS, and increases the traffic supported by the donor BTS. The repeater makes the coverage radius of the donor BTS ( ).
25 『____』信道传送反向通信数据及信令。The 『____』 channel transmits communication da 26 业务信道被不同的用户占用时，这些用户由『____』标识或区分。When a traffic channel is occupied
27 每个寻呼信道可以与高达 32 个『____』信道配合。Each paging channel can work together with up t
cdma2000 1X的WALSH码长是（ ）位。 10 The length of the WALSH code in the cdma2000 1X is ( ) bits.
11
IS95使用的WALSH码是（ ）阶。 The WALSH code used in IS95 is ( )-orders.
22 基站在『____』信道发送信号供移动台识别基站并引导移动台入网。The BTS sends signals via the『__
23 基站在『____』信道向移动台发送有关寻呼、指令以及业务信道指配信息。The BTS sends revelant pagi 24 『____』信道传送前向通信数据及信令。The 『____』channel transmits the communication data and
CDMA-1X中补充信道的作用是（ ）。 3 The functions of the supplementary channel in the CDMA-1X are ( ).
承载高速分组数据业务的信道是（ ）。 4 The channel for carrying the high-speed packet data service is ( ).
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香农信道容量公式指出：当信号低于噪声时，不 可以进行可靠的通信。 The Shannon channel capacity formula indicates that: When the signal is lower than the noise, reliable communication is not possible. 工程中常用的7/8”馈线，工作频率越高，波长 越短，损耗越小。 The 7/8” feeder is often used in engineering. The higher the working frequency, the shorter the wavelength, and the less the loss of the feeder. GPS天线（通常称之为蘑菇头）为有源天线，内 部有放大电路，需要外部供电。 The GPS antenna (generally referred to as “mushroom head) is an active antenna with amplification circuits A2接口用于支持当移动台处于控制在业务信道状 态时所发生的BSS之间的软切换，A2接口被划分 成两部分：A2信令接口和A2业务接口。 The A2 interface is used for supporting the soft handoff between BSSs that occurs when the MS is in the traffic channel status. The A2 interface is divided into two parts: A2 signaling interface and A2 service interface. F-CACH为前向公共功率控制信道。 The F-CACH is forward pubblic power control channel. 同一BTS内不同扇区相同载频之间的切换，我们 称之为半软切换。 The handoff between peer carriers of different sectors in the BTS is called semi soft handoff. CDMA系统的容量主要受限于系统内移动台的相互 干扰，所以如果每个移动台的信号到达基站时都 达到所需的最小信噪比，系统容量将会达到最大 值。 The capacity of the CDMA system is primarily limited by the mutual interference between MSs in the system. Therefore, if the required minimum signalto-noise ratio is reached when the signals of each MS arrive at the BTS, the system SCCP为BSSAP应用提供两类业务：0类基本面向连 接类，2类基本无连接类。 The SCCP provides two types of services for BSSAP application: Category 0 connection-oriented service, and category 2 non-connection service.
19 在FDMA、TDMA和CDMA三种多址接入方式中，『____』方式频谱效率最高。In the three multi-access mod
20 cdma20001x每个扇区的基本载频中至少包含『____』、『____』、『____』、『____』、『____』、『___
21 基站在『____』信道发送信息提供移动台建立与系统的定时和同步。The BTS sends information via the
28 移动台使用『____』个接收单元(Finger)，基站使用『____』个，此多相关器系统叫做Rake接收机。The M
29 寻呼信道的WALSH 码是『____』。The WALSH codes of the paging channel are 『____』 . 香农信道容量公式指出：如果信息传输速率C不 变，则带宽W和信噪比P/N是可以互换的。 The Shannon channel capacity formula shows 30 that: With information transmission rate C unchanged, the bandwidth W and signalnoise ratio P/N can be reciprocated. 目前3G标准采纳的三种空中接口标准为 WCDMA、 CDMA2000、TD-SCDMA。 31 Currently, the 3G standard adopts three air interface standards: WCDMA, CDMA2000 and TD-SCDMA.
CDMA中短码的作用是（ ）。 5 The function of the short code in the CDMA is ( ).
在cdma20001x系统中，导频信道使用（ ）来扩 频。 6 In the cdma20001x system, the pilot channel uses ( ) for spreading. 在cdma20001x系统中，同步信道使用（ ）来扩 频。 7 In the cdma20001x system, the synchronization channel uses ( ) for spreading.
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MTP3从功能分为两个基本功能：信令消息处理功 能和信令网络管理功能。 The MTP3 provides two basic functions: Signaling message processing function and signaling network management function. 分布在CPM上的软件模块有S_BSSAP、S_MTP3和 S_MTP2。 The software modules on the CPM include: S_BSSAP, S_MTP3 and S_MTP2. 前向补充业务信道F-SCH是用来在通话过程中， 向特定的MS传送语音信息。（ ） The forward supplementary traffic channel F-SCH is used for sending voice information to the specific MS in the conversation process. ( ) 从用户的角度看，1x系统与95系统的最大差别在 于1x系统能提供高速分组数据业务。（ ） From the point of view of the user, the 1x system differs from the IS95 system primarily in that it provides high-speed packet data services. ( ) 不同MSC下的BSC基站之间只能是硬切换。 Only hard handoff can occur between the BSC BTSs under different MSCs. 当分组数据呼叫处于dormant状态的时候，下述 哪种连接仍然保持着（ ）。 When the packet data call is in dormant state, which of the following connections is still maintained? ( )
CDMA直放站施主天线与重发天线的隔离不好，就 会引起直放站系统的自激。实践中在直放站增益 和隔离度之间一般要求有（ ）的余量。 If the CDMA repeater donor BTS is poorly 18 isolated from the retransmission antenna, the self activation of the repeater system will occur. In the practice, a margin of ( ) should be reserved between the repeater gain and the isolation.
cdma2000 1X使用的WALSH码是（ ）阶。 12 The WALSH code used in cdma2000 1X is ( )orders.
CDMA中短码的码长是（ ）位。 13 The length of the short code in CDMA is ( ) bits.
CDMA中Walsh码的作用是（ ）。 8 The function of the Walsh code in the CDMA is ( ).
CDMA系统中移动台显示的时间从（ ）获取。 9 In the CDMA system, the time displayed on the MS is obtained from ( ).
1 CDMA的关键技术包括『____』、『____』、『____』和卷积编码、块交织技术、语音编码技术等技术。The
在CDMA系统中，为克服无线的多径传输，采用的 关键技术是（ ）。 2 In the CDMA system, in order to overcome the multipath transmission of radio, the key technologies adopted are ( ).
CDMA系统功率控制子信道插入在前向（ ）中。 14 The power control sub-channel of the CDMA system is inserted into the forward ( ). 多个直放站共用一个施主基站时，该施主基站最 多能带多少直放站主要取决于（ ）。 When multiple repeaters share one donor 15 BTS, the number of repeaters that can be carried by the donor BTS primarily depends on ( ). 直放站扩展了施主基站的覆盖范围，使施主基站 所支持的话务量增加，同时直放站也导致施主基 站覆盖区内移动台的发射功率（ ）。 The repeater expands the coverage of the 16 donor BTS, and increases the traffic supported by the donor BTS. The repeater makes the transmitting power of the MS in the donor BTS coverage area ( ). 直放站扩展了施主基站的覆盖范围，使施主基站 所支持的话务量增加，同时直放站也导致施主基 站的覆盖半径（ ）。 The repeater expands the coverage of the 17 donor BTS, and increases the traffic supported by the donor BTS. The repeater makes the coverage radius of the donor BTS ( ).
25 『____』信道传送反向通信数据及信令。The 『____』 channel transmits communication da 26 业务信道被不同的用户占用时，这些用户由『____』标识或区分。When a traffic channel is occupied
27 每个寻呼信道可以与高达 32 个『____』信道配合。Each paging channel can work together with up t
cdma2000 1X的WALSH码长是（ ）位。 10 The length of the WALSH code in the cdma2000 1X is ( ) bits.
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IS95使用的WALSH码是（ ）阶。 The WALSH code used in IS95 is ( )-orders.
22 基站在『____』信道发送信号供移动台识别基站并引导移动台入网。The BTS sends signals via the『__
23 基站在『____』信道向移动台发送有关寻呼、指令以及业务信道指配信息。The BTS sends revelant pagi 24 『____』信道传送前向通信数据及信令。The 『____』channel transmits the communication data and
CDMA-1X中补充信道的作用是（ ）。 3 The functions of the supplementary channel in the CDMA-1X are ( ).
承载高速分组数据业务的信道是（ ）。 4 The channel for carrying the high-speed packet data service is ( ).
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Βιβλιοθήκη Baidu
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香农信道容量公式指出：当信号低于噪声时，不 可以进行可靠的通信。 The Shannon channel capacity formula indicates that: When the signal is lower than the noise, reliable communication is not possible. 工程中常用的7/8”馈线，工作频率越高，波长 越短，损耗越小。 The 7/8” feeder is often used in engineering. The higher the working frequency, the shorter the wavelength, and the less the loss of the feeder. GPS天线（通常称之为蘑菇头）为有源天线，内 部有放大电路，需要外部供电。 The GPS antenna (generally referred to as “mushroom head) is an active antenna with amplification circuits A2接口用于支持当移动台处于控制在业务信道状 态时所发生的BSS之间的软切换，A2接口被划分 成两部分：A2信令接口和A2业务接口。 The A2 interface is used for supporting the soft handoff between BSSs that occurs when the MS is in the traffic channel status. The A2 interface is divided into two parts: A2 signaling interface and A2 service interface. F-CACH为前向公共功率控制信道。 The F-CACH is forward pubblic power control channel. 同一BTS内不同扇区相同载频之间的切换，我们 称之为半软切换。 The handoff between peer carriers of different sectors in the BTS is called semi soft handoff. CDMA系统的容量主要受限于系统内移动台的相互 干扰，所以如果每个移动台的信号到达基站时都 达到所需的最小信噪比，系统容量将会达到最大 值。 The capacity of the CDMA system is primarily limited by the mutual interference between MSs in the system. Therefore, if the required minimum signalto-noise ratio is reached when the signals of each MS arrive at the BTS, the system SCCP为BSSAP应用提供两类业务：0类基本面向连 接类，2类基本无连接类。 The SCCP provides two types of services for BSSAP application: Category 0 connection-oriented service, and category 2 non-connection service.
19 在FDMA、TDMA和CDMA三种多址接入方式中，『____』方式频谱效率最高。In the three multi-access mod
20 cdma20001x每个扇区的基本载频中至少包含『____』、『____』、『____』、『____』、『____』、『___
21 基站在『____』信道发送信息提供移动台建立与系统的定时和同步。The BTS sends information via the
28 移动台使用『____』个接收单元(Finger)，基站使用『____』个，此多相关器系统叫做Rake接收机。The M
29 寻呼信道的WALSH 码是『____』。The WALSH codes of the paging channel are 『____』 . 香农信道容量公式指出：如果信息传输速率C不 变，则带宽W和信噪比P/N是可以互换的。 The Shannon channel capacity formula shows 30 that: With information transmission rate C unchanged, the bandwidth W and signalnoise ratio P/N can be reciprocated. 目前3G标准采纳的三种空中接口标准为 WCDMA、 CDMA2000、TD-SCDMA。 31 Currently, the 3G standard adopts three air interface standards: WCDMA, CDMA2000 and TD-SCDMA.
CDMA中短码的作用是（ ）。 5 The function of the short code in the CDMA is ( ).
在cdma20001x系统中，导频信道使用（ ）来扩 频。 6 In the cdma20001x system, the pilot channel uses ( ) for spreading. 在cdma20001x系统中，同步信道使用（ ）来扩 频。 7 In the cdma20001x system, the synchronization channel uses ( ) for spreading.
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MTP3从功能分为两个基本功能：信令消息处理功 能和信令网络管理功能。 The MTP3 provides two basic functions: Signaling message processing function and signaling network management function. 分布在CPM上的软件模块有S_BSSAP、S_MTP3和 S_MTP2。 The software modules on the CPM include: S_BSSAP, S_MTP3 and S_MTP2. 前向补充业务信道F-SCH是用来在通话过程中， 向特定的MS传送语音信息。（ ） The forward supplementary traffic channel F-SCH is used for sending voice information to the specific MS in the conversation process. ( ) 从用户的角度看，1x系统与95系统的最大差别在 于1x系统能提供高速分组数据业务。（ ） From the point of view of the user, the 1x system differs from the IS95 system primarily in that it provides high-speed packet data services. ( ) 不同MSC下的BSC基站之间只能是硬切换。 Only hard handoff can occur between the BSC BTSs under different MSCs. 当分组数据呼叫处于dormant状态的时候，下述 哪种连接仍然保持着（ ）。 When the packet data call is in dormant state, which of the following connections is still maintained? ( )
CDMA直放站施主天线与重发天线的隔离不好，就 会引起直放站系统的自激。实践中在直放站增益 和隔离度之间一般要求有（ ）的余量。 If the CDMA repeater donor BTS is poorly 18 isolated from the retransmission antenna, the self activation of the repeater system will occur. In the practice, a margin of ( ) should be reserved between the repeater gain and the isolation.
cdma2000 1X使用的WALSH码是（ ）阶。 12 The WALSH code used in cdma2000 1X is ( )orders.
CDMA中短码的码长是（ ）位。 13 The length of the short code in CDMA is ( ) bits.
CDMA中Walsh码的作用是（ ）。 8 The function of the Walsh code in the CDMA is ( ).
CDMA系统中移动台显示的时间从（ ）获取。 9 In the CDMA system, the time displayed on the MS is obtained from ( ).