DSSS with FPGA

In this paper, we present the implementation of Direct Sequence Spread Spectrum (DSSS) on Field Programmable Gate Array (FPGA) using one of the hardware definition languages ,Very High Speed Circuit Hardware Description Language (VHDL).AIgorithms are implemented on 3s100 evg100-4 device, belonging to Xlinx FPGA family.These systems are used in mobile communication and military systems.Data of transmitter is XORed with a random array in this transmission method. Advantage of system spreading of transmitted signal to do wide frequency range and increasing the processin speed by using FPGA.