A Study On Direct-Sequence Spread Spectrum Despreading Without The Code

Direct Sequence Spread Spectrum (DSSS) system usually operates in the condition of low Signal-to-Noise Ratio (SNR). The receiver extracts information from the signal through correlation operation by the spread code. In order to meet the needs of DSSS signal reconnaissance, a method of dispreading without the code is brought forward by this paper, in which the local code is gained from the DSSS signal. So we can intercept DSSS signal with low SNR even if the spreading code is unknown. Liu Jie (Communication and Information System) Directed by Prof. Gao Huisheng...