Title :
Adaptive filter using decision-feedback to suppress BPSK interference in spread spectrum systems
Author :
Hongyu, Sun ; Libing, Du
Abstract :
The research results on tone interference suppression are extended to BPSK interference suppression by analyzing the signal characteristics of the BPSK interference. Methods including one called “sign inversion of interference estimation output controlled by error” are promoted and the valid conditions of the method are analyzed. Simulation results show that applying the new method under valid conditions can make more significant improvement (about 26 dB) in the convergence performance of algorithms for suppressing BPSK type narrow band interference than previous results made without the new method
Keywords :
adaptive filters; adaptive signal processing; circuit feedback; code division multiple access; convergence of numerical methods; filtering theory; interference suppression; land mobile radio; phase shift keying; radiofrequency interference; spread spectrum communication; BPSK interference suppression; CDMA; adaptive filter; algorithms; convergence performance; decision feedback; error control; interference estimation output; mobile communications; narrow band interference; sign inversion; signal characteristics; simulation results; spread spectrum systems; Spread spectrum communication;
Conference_Titel :
Electromagnetic Compatibility Proceedings, 1997 International Symposium on
Conference_Location :
Beijing
Print_ISBN :
0-7803-3608-9
DOI :
10.1109/ELMAGC.1997.617203
