【摘 要】
：
一、引言随着人类社会生活水平的不断提高和生活方式的多样化,在各种业务方面就需要迅速地,高效率的交换信息。这样的信息交换不仅在特定场合间进行,而且需在移动的车辆之间
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一、引言随着人类社会生活水平的不断提高和生活方式的多样化,在各种业务方面就需要迅速地,高效率的交换信息。这样的信息交换不仅在特定场合间进行,而且需在移动的车辆之间迅速地进行。移动通信是提供实现这一目的的一种手段。故而,最近对便携式无线电话机的需要与日俱增。根通信白皮书报告,到77年,国内无线电局数达到152万个。特别,移动无线电局占
I. INTRODUCTION With the continuous improvement of the living standards of humankind and the diversification of lifestyles, information needs to be swiftly and efficiently exchanged in various businesses. Such exchange of information is not only between specific occasions, but also between vehicles moving quickly. Mobile communication is a means of providing this. Therefore, the demand for portable radiotelephones has recently increased. The White Paper on Root Communications reported that by 1977, the number of domestic radios had reached 1.52 million. In particular, the mobile radio office accounted for
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