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随着北京电信长城移动通信CDMA实验网的开通,国内手机通信系统在经历了模拟、GSM数字系统的变革之后,在去年10月又迎来了码分多址技术——CDMA数字蜂窝移动通信系统的时代。目前CDMA技术在北美、亚太地区已被大规模投入商用。在美国的移动通信市场上,CDMA手机已成为购机者的首选目标。而以前的模拟手机只能在模拟网覆盖的地区内使用,GSM手机只能在GSM网覆盖的地区内使用。两大系统互无支撑,不但给使用者带来了一定的
With the opening of Beijing Telecom Great Wall Mobile CDMA Experimental Network, the domestic mobile phone communication system has undergone a revolution in analog and GSM digital systems. In October last year, it also ushered in the CDMA technology - CDMA digital cellular mobile communication system Era. At present, CDMA technology has been put into commercial operation on a large scale in North America and Asia Pacific. In the United States mobile communications market, CDMA handsets have become the preferred target of purchasers. Previous analog handsets were only used in areas covered by analog networks, and GSM handsets could only be used in areas covered by the GSM network. Mutual support between the two systems, not only to the user a certain amount of