gsm简介毕业论文外文翻译

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With the arrival of the era of 3G mobile communication industry, the development of third-generation (3G), also makes the life of people. 2009 on January 7th, ministry of information industry and for China mobile, China unicom, China telecom, 3G licences issued marks China formally entered 3G era. One notation: China mobile increase based on td-scdma 3G licences, China unicom increase WCDMA 3G licences, based on China telecom for CDMA2000. One of the most skillful WCDMA called 3G technology. Based on GSM network development WCDMA is out of 3G technology is put forward, the broadband of Europe and Japan, its CDMA technology of broadband CDMA technology are basically the same. Currently will both further integration. This technology can be mounted on the existing GSM network for system providers, can easily transition. Therefore the innate WCDMA market unicom get WCDMA, huge funds licences for 3G base construction. Nanjing in 2009 has basically completed the construction of base and WCDMA launched the first China unicom 3G services. To ensure the normal operation of the user base, and the normal use of the business, the maintenance work for WCDMA base in vigorously.

As the 3G era, the rapid development of the communications industry, 3G also makes people's lives changed dramatically. January 7, 2009, the Ministry of Industry and Information Technology of China Mobile, China Unicom, China Telecom issuing 3G licenses, a move indicates that China has formally entered into the 3G era. One comment: China Mobile to increase based on the 3G TD-SCDMA license to increase China Unicom's 3G license based on WCDMA, China Telecom CDMA2000. Which is called the most skilled WCDMA 3G technology. WCDMA is based on the GSM network out of 3G technology development, is Europe's proposed broadband CDMA technology, broadband and Japan made the same CDMA technology. Further integration of the two currently. This technology can set up the existing GSM network, for system providers, can easily transition. Therefore WCDMA market with inherent advantages. China Unicom get the WCDMA license, put a lot of money for the construction of 3G base stations. Nanjing in 2009 has been basically completed the construction of WCDMA base stations, China Unicom is also the first to introduce 3G services. To ensure the normal operation of the base station and user operations normal use, for the maintenance of WCDMA base stations are also vigorously.

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是使用GSM网络传输信息，还是利用GSM定位呢？如果单纯的采用GSM定位，可能不是特别的精准，华熙车载智能安全箱采用的是GSM+GPS双定位系统。