Title :
Robust beamforming for motional interference mitigation in DSSS
Author :
YingHui Wang ; Ling Wang ; Zhaolin Zhang ; Rugui Yao ; Kun Wei
Author_Institution :
Sch. of Electron. & Inf., Northwestern Polytech. Univ., Xi´an, China
Abstract :
A robust beamformer is presented to mitigate interference for direct sequence spread spectrum (DSSS) communications when the receiver vibrates/moves quickly or the interference environment is nonstationary. This paper introduces taper processing (TP) beam forming to widen the notch and suppress the sidelobe simultaneously. Nonlinear least-square method is adopted to realize the desired low-sidelobe array pattern. And an extension matrix without the knowledge of interference arrival angle is presented for notch widen. Simulations illustrate the validity and efficiency of TP beam forming against motional excess interference in DSSS.
Keywords :
array signal processing; interference suppression; least squares approximations; nonlinear equations; spread spectrum communication; DSSS communications; TP beam; direct sequence spread spectrum communications; interference arrival angle; low-sidelobe array pattern; motional interference mitigation; nonlinear least-square method; robust beamforming; taper processing forming; Adaptation models; Array signal processing; Jamming; Robustness; Spread spectrum communication; DSSS; adaptive arrays; robust beamforming; taper processing;
Conference_Titel :
Wireless and Microwave Technology Conference (WAMICON), 2013 IEEE 14th Annual
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5536-0
Electronic_ISBN :
978-1-4673-5535-3
DOI :
10.1109/WAMICON.2013.6572745
