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随着经济的飞速发展和人民生活水平的不断提高，以GSM为代表的数字移动通信系统近几年在中国有了突破性发展。我国自1995年开始着手建立以GSM为代表的数字移动通信系统，到1997年7月数字移动通信用户已超过1000万，预计2000年全国移动通信用户将达3500万。但我国的国产移动通信
With the rapid economic development and continuous improvement of people’s living standard, the digital mobile communication system represented by GSM has made a breakthrough in China in recent years. Since 1995, China started to set up a digital mobile communication system represented by GSM. By July 1997, the number of digital mobile communication users has exceeded 10 million. It is estimated that in 2000, the number of national mobile communication users will reach 35 million. But China’s domestic mobile communications