Title :
An Analysis of Optimum Interference Excision Filter for Spread Spectrum Systems
Author :
Kao, H. ; Lu, N. ; McKee, O.
Author_Institution :
ITT Avionics Division, 390 Washington Avenue, Nutley, NJ 07110
fDate :
Oct. 31 1983-Nov. 2 1983
Abstract :
The performance of an optimum filter is analyzed and compared to that of a whitening filter and a conventional matched filter for rejecting interference in spread spectrum systems. It is shown that the performance analysis of the optimum filter can be greatly simplified by formulating the detection process in the discrete-time domain and modeling the noise as a Markov process. In this formulation, the relative processing gain of the optimum filter over other types of filter can be easily calculated and the effect of filtering operations on inter-symbol interference can be clearly demonstrated. Specifically, closed form expressions for the filter performance in the presence of interference is derived for a BPSK spread spectrum system.
Keywords :
Aerospace electronics; Colored noise; Covariance matrix; Interference; Matched filters; Performance analysis; Signal to noise ratio; Spread spectrum communication; White noise; Working environment noise;
Conference_Titel :
Military Communications Conference, 1983. MILCOM 1983. IEEE
Conference_Location :
Washington, DC, USA
DOI :
10.1109/MILCOM.1983.4794783
