H35-510-ENU Online Training

1. How is the antenna gain obtained?

2. If DTX technology is used, the phone does not need to transmit anything during the interval of voice.

3. Which of the following radio wave bands does the frequency band currently used by the GSM system belong to?

4. In the mobile communication system, the diffraction capability and penetration capability of the 900M signal are better than the 1800M signal.

5. A 10W power signal, after an attenuator (the loss is 6dB), the power is?

6. The location area is a subset of the routing area, and one or more location areas form a routing area.

7. E-GSM frequency band means:

8. According to the GSM specification, if the receiving sensitivity of the base station is -110 dBm, then in order to ensure normal operation, the maximum value of the first adjacent interference level of the carrier frequency is?

9. Slow fading rate is mainly determined by?

10. GSM frequency hopping mode can be divided into frame hopping and slot hopping according to time domain. Frame hopping means that each hopping frequency point is changed once every TDMA frame period, and slot hopping refers to the frequency change of each slot of TDMA frame once.

11. GSM uses which multiple access multiplexing?

12. GSM 2.5 generation communication system is?

13. The 1800M GSM bandwidth allocated by the country to China Unicom is?

14. GSM base station subsystem includes?

15. The bandwidth of a frequency point of GSM is?

16. Mobile phone first access to mobile communication network through which device?

17. What kind of channel is the BCCH abbreviation?

18. CDMA and GSM communication systems belong to cellular mobile communication systems, and which one belongs to cellular mobile communication systems?

19. How does the signal travel between the phone and the antenna?

20. China's independent research and development of 3G standards is: