TITLE:
Improved Alamouti STBC Multi-Antenna System Using Hadamard Matrices
AUTHORS:
K. O. O. Anoh, O. Ochonogor, R. A. A. Abd-Alhameed, S. M. R. Jones, T. T. Mapuka
KEYWORDS:
STBC; MIMO; Hadamard
JOURNAL NAME:
International Journal of Communications, Network and System Sciences,
Vol.7 No.3,
March
13,
2014
ABSTRACT: To achieve multiple input multiple output (MIMO) in
wireless communication, the orthogonal space-time block coding (OSTBC) is
evaluated next. At first, the OSTBC design is extended to include Hadamard
matrix, referred to in this work, as traditional Hadamard OSTBC. Next, the Hadamard
matrix is imposed on the conventional OSTBC, which is referred to, in this work
as, Alamouti-Hadamard STBC. Both the traditional Hadamard OSTBC and the
conventional STBC are compared with the Alamouti-Hadamard STBC. It will be
shown that imposing the Hadamard conditions over the conventional OSTBC, the
performance of the OSTBC 2-transmit antenna scheme can be significantly
improved in terms of BER performance. All propositions are well supported with
analytical derivations.