TY - JOUR
T1 - Real-domain decoder for full-rate full-diversity STBC with multidimensional constellations
AU - Lee, Heunchul
AU - Cho, Jungho
AU - Kim, Jong Kyu
AU - Lee, Inkyu
N1 - Funding Information:
This work was supported in part by the Ministry of Knowledge Economy (MKE), Korea, under the Information Technology Research Center (ITRC) support program supervised by the Institute for Information Technology Advancement (IITA) (IITA-2008-C1090-0801-0013) and in part by grant No. R01-2006-000-11112-0 from the Basic Research Program of the Korea Science and Engineering Foundation. This paper was presented in part at the IEEE International Conference on Communications, Istanbul, Turkey, June 2006.
PY - 2009
Y1 - 2009
N2 - In this letter, we present a new maximum likelihood (ML) decoding algorithm for space time block codes (STBCs) that employ multidimensional constellations. We start with a lattice representation for STBCs which transforms complex channel models into real matrix equations. Based on the lattice representation, we propose a new decoding algorithm for quasiorthogonal STBCs (QO-STBC) which allows simpleML decoding with performance identical to the conventional ML decoder. Multidimensional rotated constellations are constructed for the QO-STBCs to achieve full diversity. As a consequence, for quasi-orthogonal designs with an arbitrary number of transmit antennas N (N ≥ 4), the proposed decoding scheme achieves full rate and full diversity while reducing the decoding complexity from O(McN/2) to O(McN/4) in a Mc-QAM constellation.
AB - In this letter, we present a new maximum likelihood (ML) decoding algorithm for space time block codes (STBCs) that employ multidimensional constellations. We start with a lattice representation for STBCs which transforms complex channel models into real matrix equations. Based on the lattice representation, we propose a new decoding algorithm for quasiorthogonal STBCs (QO-STBC) which allows simpleML decoding with performance identical to the conventional ML decoder. Multidimensional rotated constellations are constructed for the QO-STBCs to achieve full diversity. As a consequence, for quasi-orthogonal designs with an arbitrary number of transmit antennas N (N ≥ 4), the proposed decoding scheme achieves full rate and full diversity while reducing the decoding complexity from O(McN/2) to O(McN/4) in a Mc-QAM constellation.
KW - Diversity methods
KW - Maximum likelihood decoding (MLD)
KW - Multidimensional rotated constellations
KW - Space-time block codes (STBC)
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U2 - 10.1109/TCOMM.2009.0901.070056
DO - 10.1109/TCOMM.2009.0901.070056
M3 - Article
AN - SCOPUS:60149109337
VL - 57
SP - 17
EP - 21
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
SN - 0090-6778
IS - 1
ER -