中英论文翻译对照：全球移动通信系统

中英论文翻译对照：全球移动通信系统内容摘要：

. The cell coverage area is controlled by a base station which is itself made up of two elements. The first element is the transmission system which municates out to the mobile and also receives information from it to set up and maintain calls when actually in operation. The base station transceiver (BST) is controlled by the base station controller (BSC), which municates with the mobile switching center (MSC) the essential link to the local public switched telephone work (PSTN), and to the subscriber data which is stored in registers within the system. The subscriber registers allow the GSM system to check a subscriber who requests the use of the work, allow access and then set up the charging function, etc. 6 The GSM system was allocated part of the 900 MHz band at the 1978 World Administration Conference (WAC), the actual bands being 890 to 915 MHz for the uplink transmission and 935 to 960 MHz for the downlink. The access method is time division multiple access (TDMA). The GSM system operates in a burst transmission mode with 124 radio channels in the 900 MHz band, and these bursts can carry different types of information. The first type of information is speech, which is coded at kbit/s or 13 kbit/s. The second type is data, which can be sent at kbit/s, 6 kbit/s or forms of transmission are the useful parts of the transmission, but have to be supported by overhead information which is sent in control channels (CCH). The use of digital radio transmission and the advanced handover algorithms between radi。