Position location services will not only provide new customer options and products for wireless carriers, but will also provide features that could dierentiate services in dierent markets (i.e., dierentiation between PCS, cellular, and special

先用Matlab理论仿真，得出滤波器系数。再用Verilog语言在ISE环境下编写程序，通过Modelsim和ChipScope进行波形仿真和引号抓取，从而提高调试的效率。通过手机发送指令来控制上下变频器的参数。(Firstly, the filter coefficients are obtained by simulation with the theory of matlab. Then the program is written in Verilog language under IS