Design & Research For Spread Spectrum Modulation SOC Based On The CDMA20001x Reverse Link

The design of CDMA terminal chip is a very actual value and extensive application problem in the field of CDMA technology application.with the development of micro-electronics technology,the design of integrated circuit has stepped into the age of SOC( system on chip),which provide a brand-new method for CDMA communication system project.In this paper, A design of CDMA2000 1x spread modulation SOC has be researched with large scale Field Programmle Gate Array device,and make a certain results.According to the structure of the paper,the research can be divided into three parts as follows.The first part introduces the physical layer standard for CDMA 2000 1X reverse link spread spectrum systems,and presents the design and implementation of a simulation model for the CDMA2000 1x reverse link with the software systemview of the communications system simulation.The second part studies the characteristics of CDMA2000 1x reverse link, and implements a softcore design of the cdma20001x RTL SOC with HDL(Hardwire Desciptionin Language) verilog in accordance with the IS-2000 specifications.the model include the softcore of a spread spectrum modulation and a simple 8-bit processor.as the same time simulate all the parts of the SOC softcore with software modesim.The third part presents the design and implementation of the SOC test model with large scale FPGA device APEX20K100E ,and gives the whole SOC simulation waves .the results show the design of the SOC softcore is very effective and practicable.