Small-size algorithms for type-IV discrete cosine transform with reduced multiplicative complexity




digital signal processing, type-IV discrete cosine transform, fast algorithm


Discrete cosine transforms are widely used in smart radioelectronic systems for processing and analysis of incoming information. The popularity of using these transform is explained by the presence of fast algorithms that minimize the computational and hardware complexity of their implementation. Type-IV discrete cosine transform occupies a special place in the list of the specified transformations. This article proposes several algorithmic solutions for implementing the type-IV discrete cosine transform. The effectiveness of the proposed solutions is explained by the possibility of factorization of the DCT-IV matrix, which leads to a decrease in computational and implementation complexity. A set of completely parallel type-IV DCT algorithms for small lengths of signal sequences (N = 2, 3, 4, 5, 6, 7, 8, 9) is presented.

Author Biography

Aleksandr Cariow, West Pomeranian University of Technology

Professor and Chair of the Department of Computer Architectures and Telecommunications.


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