New Properties of Frames

Let H be a finite-dimentional complex Hilbert space and l2(H) is the space of square summable sequences in H. We will give a new characterization of a frame for H, we give our definition of a frame for the Hilbert space l2(H), we also define and give the properties of the frame operator. We equally show that our definition is equivalent to the definition of a frame for the Hilbert space H. Finally, we give a way to construct frames for l2(Hn) from frames for l2(Hp) such that p<n via fusion frame theory.