AMR 4.75kbps自适应码本搜索算法的FPGA实现

Realization of the AMR 4.75kbps Adaptive Codebook Search Algorithm Based on FPGA

自适应码本搜索算法是3G移动通信标准AMR的重要组成。利用QuartusⅡ6.0平台实现了AMR4.75kbps速率下的开环基音搜索、闭环基音搜索2个关键环节。文中通过自顶向下及模块化设计思想,将运算及硬件资源消耗分散到各模块中,算法执行速度提高。

The adaptive codebook search is one of the key component in the 3G＇s speech standard AMR. The open loop and closed loop search of adaptive codebook with AMR 4.75 kbps ratio are realized based on FP- GA by QuartusII 6.0 platform. The ＂from up to bottom＂ and module design methods are used in the process of realization, which make the hardware and calculating consumption decentralized to some modules, thus increasing the execution speed.