基于FPGA的AVS-P2熵编码器设计  

AVS-P2 Entropy Coder Design Based on FPGA

作　　者：王宇[1] 李志诚[1] 李凤亭[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《微计算机信息》2007年第32期199-200,271,共3页Control & Automation

摘　　要：本文重点研究了AVS-P2熵编码器的算法、结构以及利用FPGA实现的若干关键问题,给出了详细的块变换系数熵编码器硬件结构,并通过了仿真验证。实现中提出了一种新的2D-VLC码表存储结构和一种确定指数哥伦布码码长的方法,可以节省59%的码表存储空间和降低指数哥伦布码码长计算电路的硬件复杂度。By researching on the hardware architecture of the entropy coding algorithm, An AVS-P2 entropy coder based on FPGA is designed and presented in this paper. In this FPGA implementation scheme, a very efficient storage structure for VLC table access and a very simple method for deciding the length of Exp-Golomb code word are designed, so that, have greatly saved the storage space and reduced the coding complexity. The designed entropy coder has passed the simulation in ModelSim.

关 键 词：AVS 熵编码 VLC 指数哥伦布码 

分 类 号：TN919.81[电子电信—通信与信息系统]