说明：  This a Simulink model that demonstrates an algorithm that applies wireless security on physical layer. The demonstration is based on 802.11a (simplified) and receiver is implemented on Xilinx Virtex 4 FPGA. The RAR file inlcudes 2 files: 1. Simulink model 2. initialization file. Software requirements: 1. Matlab, r2007a or later 2. Simulink with DSP and Comm blocksets 3. Xilinx ISE with System Generator for DSP 9.2i or later.