Several bit permutation instructions, including GRP, OMFLIP, CROSS, and BFLY, have been proposed recently for efficiently performing arbitrary bit permutations. Previous work has shown that these instructions can accelerate a variety of applications such as block ciphers and sorting algorithms. In this paper, we compare the implementation complexity of these instructions in terms of delay. We u...

Independent component analysis (ICA) in the frequency domain is used for solving the problem of blind source separation (BSS). However, this method has some problems. For example, a general ICA algorithm cannot determine the permutation of signals which is important in the frequency domain ICA. In this paper, we propose an approach to the solution for a permutation problem. The idea is to effec...

7 This paper addresses the well known permutation problem in frequency domain 8 blind source separation. The proposed method uses correlation between two signals 9 in each DFT bin to solve the permutation problem. One of the signals is par10 tially separated by a time domain blind source separation method and the other 11 is obtained by the frequency domain blind source separation method. Two d...