Abstract
Lee and colleagues have introduced a generalised reverse jacket transform (GRJT) as a multi-phase or multilevel generalisation of the WHT and the even-length DFT. The matrix representing a primary GRJT is permutation-equivalent to the DFT matrix of even order, and in addition possesses the property to have a border consisting entirely of ±1's. To the authors' knowledge, the problem of existence of such transform matrices in the case of odd order, has attracted minor attention in the existing literature. In this Letter, a contribution is made regarding this problem in respect to an extended class of matrices.
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