Abstract
Recent mobile devices, which adopted Eureka-147, terrestrial-digital multimedia broadcasting (T-DMB) systems, are developed as integrated circuit. As a result, the space of memory expands hardly on mobile handheld. Therefore most mobile handheld must operate a lot of application on limited memory. To solve the problem, most of the mobile devices use some kind of compression algorithms to overcome the memory shortage. Among such algorithms, Huffman algorithm is most widely used. In this study, the authors present a novel binary tree expression of the Huffman decoding algorithm which reduces the memory use approximately by 50% and increases the decoding speed up to 30%. The authors experiment the decoding speed on an evaluation kit (SMDK 6400), which is a T-DMB mobile handheld with an advanced risk machine processor. Later to enhance the decoding speed, the authors present an optimum Huffman decoder based on hardware implementation.
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