Title :
Nonstationary Interference Suppression in DSSS System Using Time-Frequency Distribution and Polynomial Phase Signal Model
Author :
Shao, Gaoping ; She, Pei ; Ren, Xiaomin
Author_Institution :
China Nat. Digital Switching Syst. Eng. & Technol. Res. Center, Zhengzhou, China
Abstract :
A new approach for nonstationary interference suppression in Direct Sequence Spread Spectrum communication (DSSS) is introduced in the paper, which is based on Time-Frequency Distribution (TFD) and Polynomial Phase Signal (PPS) model. Instantaneous Frequency (IF) of the interference is obtained accurately by the method, and then an open-loop adaptive filter is employed to excise interference. Bit Error Rate (BER) of the DSSS system is greatly improved by the method.
Keywords :
adaptive filters; error statistics; interference suppression; spread spectrum communication; time-frequency analysis; BER; DSSS system; bit error rate; direct sequence spread spectrum communication; instantaneous interference frequency; nonstationary interference suppression; open-loop adaptive filter; polynomial phase signal model; time-frequency distribution; Adaptive filters; Bit error rate; Interference suppression; Military computing; Polynomials; Signal analysis; Spread spectrum communication; Switching systems; Systems engineering and theory; Time frequency analysis;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3692-7
Electronic_ISBN :
978-1-4244-3693-4
DOI :
10.1109/WICOM.2009.5302684
