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This paper presents a fast algorithm for the computation of forward and backward sliding conjugate symmetric se-quency-ordered complex Hadamard transform (CSSCHT). The forward CSSCHT algorithm calculates the values of window i+N/4 from those of window i and one length-N/4 CSSCHT, one length-N/4 Walsh Hadamard transform (WHT) and one length-N/4 modified WHT. The backward CSSCHT algorithm can be obtained...
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