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This paper presents an efficient algorithm for computing the two-dimensional discrete cosine transform (2-D DCT) of size pr × pr, where p is a prime. The algorithm decomposes the 2-D DCT outputs into three parts: the first part contains outputs whose indices are both multiples of p and forms a 2-D DCT of size pr−1 × pr−1, whereas the remaining outputs are further decomposed into two parts, depending...
This paper presents a generalized sidelobe canceller (GSC)-based adaptive beam- former, in which the signals passing through the lower branch of the GSC are separated into different layers of subspaces. With such a hierarchical subspace decomposition, the computational overhead required by the beamformer can be reduced and the convergence rate in adaptive processing scenarios can be enhanced. Simulations...
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