FPGA Implementation of Dsss RF Front-End Based on Software Radio

Spread spectrum technology can effectively solve the problems such as bad channel environment, multi-path fading etc between mobile station and subscribers. With the rapidly development of micro-electronic and EDA technology, now the research on base band signal treatment is more concentrated on how to implement high system performance and low bit error rate. This paper introduces a new error correction scheme which combines BCH encoding with interleaving technology, gives out a simple and efficient method to implement the error correcting code and interleaving technique of source coding, and spreading sequence generation which is suitable for the mobile communication, and designs circuit under electronic design software Quartus II using VHDL. At last the accuracy of this method was verified on FPGA.