Báo Cáo Fpga-based architecture of mp3 decoding core for multimedia systems

ABSTRACT
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A multimedia system links images and audio to distribute and transmit information to users. These
images and audio data have to be compressed for raising capacity of storing and processing tasks in
real time, and allowing the content of signals to be suitable for the band-width of processing systems.
For each terminal, softwares are the most common tools to read the compressed data, but in recent
years portable devices such as mobile phones, mp3 players, etc have gained in popularity, therefore
designing of decompressing cores used in the handheld devices are the necessary demand for
professional ASIC designers.

This paper introduces the proposed architecture of an mp3 decoding core. The core are partitioned into
subcores named Huffman, Requantizer, Reorder, Antialias, IMDCT, Filterbank, Interface and
Controller, in which each subcore can individually be designed, coded, and tested easily. The core is
firstly described as a functional specification in VHDL, and is synthesized, compiled and simulated on
Xilinx ISE 7.1i software. Finally, it is implemented on the hardware of FPGA Virtex-II Pro-board of
Xilinx Company. The results are met the standard requirement from both simulations and hardware
implementation.

Keywords: MP3, Huffman decoding, Filterbank, VHDL, Multimedia, Xilinx ISE 7.1i.