Abstract：By exploring the phase information among symbols of the Direct Sequence Spread Spectrum （DS-SS） signal, a novel de-noising approach, used in low signal noise ratio environment, is presented. By coherent integration, this method can fully retain the signal characters and separate I/Q components of the QPSK signal while restraining noise. Combined with conventional parameter estimation methods, the carrier frequency and chip rate of the DS-SS signal can be estimated. Computer simulation confirms its effectiveness.
朱孝武; 唐斌. 基于DS—SS信号相位特性的参数估计[J]. 电子与信息学报, 2005, 27(9): 1425-1428 .
Zhu XiaoWu;Tang Bin. A Novel Parameter Estimation Approach to the DS-SS Signal with Low Signal Noise Ratio. , 2005, 27(9): 1425-1428 .
2005, Vol. 27 
