VLSI Design of Resource Shared Complez-QMF Bank for HE-AAC Decoder

摘要：

A VLSI design of complex Quadrature Mirror Filterbank (QMF) for MPEG-4 High Efficiency Advanced audio Coding (MPEG-4 HE-AAC) decoder using resource-sharing technique is proposed. The algorithm that uses conventional discrete cosine transform of type IV(DCT-IV) to optimize complex-QMF is derived in this paper.By using the proposed algorithm, the VLSI design of complex valued analysis quadrature mirror filterbank (complex-AQMF) and synthesis quadrature mirror filterbank (complex-SQMF) can improve resource efficiently by sharing the same DCT module. Experiment results show that the computational complexity of the complex-QMF can be reduced up to 8.59%,the VLSI architecture of the proposed algorithm can save about 53% of area and 50% memory due to the shared resources of DCT-IV.

关键词： MPEG-4 HE-AAC Resource sharing Complez-QMF VLSI DCT-IV

作者: Junqiao Huang Gaoming Du Duoli Zhang Yukun Song Luofeng Geng Minglun Gao

作者单位: VLSI Research Institute,Hefei University of Technology,Hefei,China

会议类型: 国际会议

会议名称: 2009 IEEE 8th International Conference on ASIC(第八届IEEE国际专用集成电路大会)

会议地点: 长沙

会议语种:英文

页码: 796-799

在线出版日期: 2009-10-20（万方平台首次上网日期，不代表论文的发表时间）