DIRECTION OF ARRIVAL ESTIMATION VIA EXPLOITATION OF CYCLOSTATIONARITY IN A SPACE / TIME ARRAY PROCESSING ALGORITHM
Elsayed Elsayed Azzouz, ASHRAF ABD EL-AZIZ, M. Abo El-Azm · The International Conference on Electrical Engineering/The International Conference on Electrical Engineering · 2006
:This paper is concerned with introducing a direction of arrival estimation (DOA) estimationalgorithm that is independent of the bandwidth of the intercepted signals. The proposedalgorithm offers a modification to most subspace based DOA estimation algorithms thatdepend basically on narrowband signals assumption. The basic idea of this modification is thereplacement of conventional correlation matrix by a cyclic one. This modification enables theproposed algorithm to deal with both narrowband and wideband signals. In addition, thisalgorithm requires only that the interference signals are cyclically uncorrelated with SOI. Thiscondition is easier to be achieved than uncorrelation condition that is required byconventional algorithms. Computer simulations using an additive white Gaussian noise(AWGN) channel show that the proposed DOA estimation algorithm succeeds to estimateDOAs of the SOI and interference signals at 10 dB signal to noise ratio and -3 dB signal tointerference ratio.