Title :
An invariant matrix structure in multiantenna communications
Author :
Sayed, Ali H. ; Younis, Waleed M. ; Tarighat, Alireza
Author_Institution :
Electr. Eng. Dept., Univ. of California, Los Angeles, CA, USA
Abstract :
This letter shows that the matrix structure with 2×2 Alamouti sub-blocks remains invariant under several nontrivial matrix operations, including matrix inversion, Schur complementation, Riccati recursion, triangular factorization, and QR factorization.
Keywords :
Riccati equations; antenna arrays; antenna theory; block codes; matrix decomposition; matrix inversion; recursive estimation; space-time codes; Alamouti code subblock; QR factorization; Riccati recursion; Schur complementation; invariant matrix structure; multiantenna communication; nontrivial matrix inversion; triangular factorization; Riccati equations; Alamouti code; QR factorization; Riccati recursion; Schur complementation; invariant matrix structure; matrix inversion; matrix structure; triangular factorization;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2005.856886
