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Optimum Nonwhite Detection. A Double-matched Digital Filter Approach

Pawelec J. J.

Bulletin of the Polish Academy of Sciences. Technical Sciences

2002

Vol. 50, Nr 1

1--12

This paper presents a new method of so-called double-matched detection. It consists in matching the receiver filter both to the useful signal as well as to interference. The detection process consists of two steps. First, the signal + interference is whitened due to power spectrum of interference P(z). Second, the replica of signal is filtered via P-1(z) to match it to the new shape of useful signal. The simulation of SS reception under BPSK interference shows a high gain in comparison with classical single-matched detection. Some recommendations on applying the adaption are also provided.

Optimum double-matched detection and its application to SSMA systems

Pawelec J. J.

Journal of Telecommunications and Information Technology

2001

nr 3

80-85

This paper is concerned with the issue of optimum detection of known signal in nonwhite noise and/or narrow-band interferences. The detection is carried out in three steps. First, some function related to the power spectrum of interfering process I(z) is estimated via adaptation. Second, the signal + interference is withened due to I(z). Third, the replica of signal is filtered via I(z) to match it to the deformed signal in the previous step. The simulation of SS reception in presence of NB interference shows a high gain in comparison to classical single-matched detection.

Optimum detection of wideband signals in nonwhite noise and narrowband interference

Pawelec J. J.

Biuletyn Wojskowej Akademii Technicznej

2000

Vol. 49, nr 3

87-98

The issue of optimum detection of wideband digital signals corrupted by nonwhite noise or narrowband noisy interference was considered. The general approach to this problem and detector scheme were given. The simulation of spread spectrum reception was carried out. The obtained results point out at high detection gain in comparison with classical white detection.

W artykule rozważa się zagadnienie optymalnej detekcji sygnału szerokopasmowego wśród zakłóceń nie gładkich o wyższym paśmie, np. w szumie kolorowym. Przeprowadzono analizę zagadnienia i zaproponowano odpowiedni schemat detektora w wersji adaptacyjnej. Wykonano cykl eksperymentów symulacyjnych z odbiciem sygnałów o rozproszonym widmie. Otrzymane yniki wskazują na duże zyski w porównaniu do klasycznej detekcji "czarno-białej" (do 20 dB).