User`s guide

Matrix Multiply

5-282

5Matrix Multiply

Purpose Multiply input matrices.

Library Math Functions / Matrices and Linear Algebra / Matrix Operations

Description The Matrix Multiply block multiplies n input matrices, A, B, C, ..., U

, in the

forward direction, where n is specified by the

Number of input ports

parameter and U

is the input at the nth port.

Y = ((((A*B)*C)*D) ... Un) % Equivalent MATLAB code

All inputs must have sizes compatible for matrix multiplication; that is,

size(A,2) = size(B,1), size(B,2) = size(C,1), and so on. Inputs can be real,

complex, sample-based, or frame-based in any combination, but all inputs

must have the same precision, single or double. A length-M 1-D vector input at

any port is treated as an M-by-1 matrix.

The size of sample-based output

Y is [size(A,1) size(Un,2)]. That is, Y is

-by-N

Algorithm The Matrix Multiply block is optimized to use at most two temporary variables

for storage of intermediate results.

Dialog Box

Number of input ports

The number of inputs to the block.

Supported

Data Types

Single-precision floating point

Double-precision floating point