Simulation on DSSS Communication System based on m-sequence

Based on spread spectrum theory and with Matlab/Simulink the DSSS(direct sequence spread spectrum) communication system is modeled and simulated.The cycle of 15 m-sequence,the AWGN channel of 20 dB channel signal to noise ratio and the BPSK modulation/demodulation method are adopted for the whole system.Under the given condition,operation test on the simulation model show that the DSSS communication system could accomplish the spectrum spreading and de-spreading of the signal while has a fairly low error rate,thus the expected simulation result is achieved.Both simulation method and experiment have certain reference value for practical applications.