Title :
Interference suppression in DS/FH system using modified two sided adaptive filter
Author :
Henttu, Pertti ; SAARNISAARI, Harri ; Aroinaa, S.
Author_Institution :
Telecommun. Lab., Oulu Univ., Finland
Abstract :
The detection properties of a modified two sided RLS (recursive least squares) adaptive filter is considered. The basic RLS whitening interpolation filter is modified by applying the Huber m-estimation principle. Two types of modified whitening interpolation filters are presented. The detection capability of the basic version and two modified versions are investigated through simulations in a nonstationary interference environment. Simulation results indicate that the detection performance of the filter is increased remarkably by the modifications.
Keywords :
adaptive filters; cochannel interference; computational complexity; demodulation; estimation theory; frequency hop communication; interference suppression; interpolation; quadrature phase shift keying; recursive filters; signal detection; spread spectrum communication; tracking filters; BPSK; DS/FH system; Huber m-estimation principle; QPSK; RLS filter; adaptive filter; cochannel interference; computational complexity; frequency hopping communication; interference suppression; nonstationary interference; recursive least squares filter; spread spectrum communications; tracking filter; whitening interpolation filter; Adaptive filters; Binary phase shift keying; Demodulation; Interference suppression; Interpolation; Kalman filters; Matched filters; Quadrature phase shift keying; Resonance light scattering; Spread spectrum communication;
Conference_Titel :
Military Communications Conference, 2001. MILCOM 2001. Communications for Network-Centric Operations: Creating the Information Force. IEEE
Print_ISBN :
0-7803-7225-5
DOI :
10.1109/MILCOM.2001.986091
