中国计量学院数字移动通信在线测试(1—5章)(国外英文资料).docVIP

中国计量学院数字移动通信在线测试(1—5章)(国外英文资料) Chapter 1:3G overview The following criteria belong to the third generation of mobile communication (). A. AMPS b. GSM c. CDMAIS95 d. WCDMA The objective of imt-2000 is to demand the speed of the multimedia business in the walking environment: () A. 144kbps c. 2048kbps China unicom WCDMA currently USES the upward band (C). A. 2015-2025 MHZ B. 2130-2145 MHZ C. 1940-1955 MHZ D. 870-880 MHZ Which of the following businesses requires the highest error rate () A. streaming b. interactive c. session d. background Which of the following businesses has the highest requirement for delay ()? A. streaming b. interactive c. session d. background In the development of WCDMA standard, which version marks the true entry into 3G, is revolutionary: () A. R99 b. R4 c. R5 d. R6 The carrier bandwidth of the WCDMA system is () A. A. B. A The code rate for the WCDMA system is () A.1.2288 Mcps c. 1.25 Mcps WCDMA power control frequency is: () A. 200Hz. B Which of the following is not the main feature of the R8 network: B. a. air interface using OFDM technology introduction of MBMS business c. reducing loop delay, improve the Qos d. / on the descending rate of up to 30 MBPS / 100 MBPS Chapter 2 the principle of WCDMA wireless access network The purpose of multi-address technology is to () A. distinguish between users upside/downside signal b. distinguish between different users C. distinguish different cell towers from different stations The WCDMA dual-technique technique is () A. frequency division, duplex, duplex, duplex, and time How many users can be supported by the downside in the WCDMA ideal? A The relationship between processing gain and business speed of WCDMA is () A. there is no relationship between b. business rate, the greater the processing gain C. The greater the business rate, the greater the processing gain is smaller d. business rate is smaller, the smaller the processing gain The Turbo code (1/3) is mainly used in the WCDMA system (). A. v