A Novel Receiving Method for Baseband DSSS Signal based on Phase Domain Processing  

作　　者：Sha Xuejun Zhan Zongchao Tang Xun 

机构地区：[1]Harbin Inst Technol, Sch Elect & Informat Engn, Harbin 150001, Heilongjiang Pr, Peoples R China

出　　处：《China Communications》2010年第1期57-64,共8页中国通信（英文版）

基　　金：supported by the National Basic Research Program (973 Program) of China under Grant No.2007CB310606;National Key Technologies R&D Program under Grant No.2009ZX03004-001

摘　　要：In this paper, the phase characteristic disturbance model for baseband direct sequence spread spectrum (DSSS) signal in additive white Gaussian noise (AWGN) environment is established, and the probability density function (PDF) of phase characteristic disturbance is obtained. Then a novel receiver model for baseband DSSS signal based on maximum likelihood (ML) criterion is proposed. The simulation results show that, comparing with correlation scheme, the performance of the proposed method for baseband DSSS signal is 1dB worse in AWGN environment. However, if there is narrow interference in the AWGN environment, the proposed method will show better performance up to 2.5dB, and it has good adaptive resistance to narrowband interference located in different frequency points. This method could be used as an alterative communication scheme for military circumstance when existing strong narrowband interference of various frequencies.In this paper, the phase characteristic disturbance model for baseband direct sequence spread spectrum (DSSS) signal in additive white Gaussian noise (AWGN) environment is established, and the probability density function (PDF) of phase characteristic disturbance is obtained. Then a novel receiver model for baseband DSSS signal based on maximum likelihood (ML) criterion is proposed. The simulation results show that, comparing with correlation scheme, the performance of the proposed method for baseband DSSS signal is 1dB worse in AWGN environment. However, if there is narrow interference in the AWGN environment, the proposed method will show better performance up to 2.5dB, and it has good adaptive resistance to narrowband interference located in different frequency points. This method could be used as an alterative communication scheme for military circumstance when existing strong narrowband interference of various frequencies.

关 键 词：PHASE DOMAIN PROCESSING PHASE characteristic DISTURBANCE ML criterion anti-narrow-band interference 

分 类 号：TN[电子电信]