COME PROBLEMS OF CDMA IN CELLULAR MOBILE RADIO APPLICATIONS

摘要

systems,the problem of multiple access can be solved by the basic multiple-access schemes FDMA,TDMA,CDMA and SSMA or by combinations they of.In this paper,We will consider the where only one cell is converted to analog-CDMA mixed cell,and a 1.25 MHZ CDMA channel is assigned to all of the cells in a 7-cell cluster.Advantages of CDMA over FDMA and TDMA in cellular M bile Radio applications.