基于Cholesky分解的可配置矩阵求逆FPGA实现  

FPGA implementation of configurable matrix inversion based on Cholesky decomposition

作　　者：潘晓[1] 徐友云[1] 甘小莺[1] 

机构地区：[1]上海交通大学电子工程系无线通信技术研究所,上海200240

出　　处：《信息技术》2009年第11期141-143,共3页Information Technology

摘　　要：在各种MIMO检测算法中,MMSE算法作为硬件实现复杂度及检测性能相折衷的检测算法被广泛应用。实现MMSE检测最核心的部分是求出对应的权值矩阵。针对4发4收,3发3收,2发2收的MIMO系统的MMSE检测算法,提出了一种基于Cholesky分解,可配置成4×4,3×3,2×2正定Hermitian矩阵求逆的实现方案。该方案易于FPGA实现,且节省了FPGA中的乘法器资源。In all of MIMO detection algorithms,MMSE is widely used because it is a tradeoff between hardware implementation complexity and detection performance.To get the weight matrix is the key in MMSE hardware implementation.In this article,a configurable matrix inversion scheme based on Cholesky decomposition is introduced which can be configured as a 4×4,3×3 or 2×2 positive definite Hermitian matrix inversion module.This scheme can be easily implemented on FPGA and save the multipliers resources in FPGA.

关 键 词：CHOLESKY分解 MIMO MMSE 矩阵求逆 FPGA 

分 类 号：TN914[电子电信—通信与信息系统]