摘要： 与MUSIC算法相比，二维ESPRIT算法不需要谱峰搜索、运算量小，但存在参数配对问题。基于此，提出一种易于实现的参数配对方法，基本原理是2个表出矩阵特征值的和差等于表出矩阵和差的特征值，不需求解表出矩阵的特征向量。给出基于CORDIC算法和脉动阵的参数配对并行化实现方案，整个系统只有移位相加运算。使用ISE软件和ModelSim软件得到的仿真结果验证了该方案的正确性。
关键词:
借助旋转不变技术估计信号参数,
QR分解,
坐标旋转数字计算机,
参数配对
Abstract: Compared with MUSIC algorithm, two-dimensional Estimation of Signal Parameters via Rotational Invariance Techniques(ESPRIT) algorithm does not need search peaks of spatial spectrum, so it has less computation. However it needs pair parameters. So a new method for parameters pairing is put forward which is easy to be implemented. The pairing principle is that the sum and difference between eigenvalues of two externalization matrix equal to eigenvalues of sum and difference between two externalization matrixes. A parallel implementation scheme based on Coordinate Rotation Digital Computer(CORDIC) and systolic array is carried out, which only uses shift-adder computation unit. And the simulation by ISE and ModelSim is shown, which proves that the scheme is feasible.
Key words:
Estimation of Signal Parameters via Rotational Invariance Techniques(ESPRIT),
QR decomposition,
Coordinate Rotation Digital Computer(CORDIC),
parameters pairing
中图分类号:
王 韬;罗明阳;付连庆;杨力生. 二维ESPRIT参数配对及FPGA实现[J]. 计算机工程, 2009, 35(24): 48-50.
WANG Tao; LUO Ming-yang; FU Lian-qing; YANG Li-sheng. Parameters Pairing of Two-dimensional ESPRIT and FPGA Implementation[J]. Computer Engineering, 2009, 35(24): 48-50.