Abstract
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(Mc N/2) to O(Mc N/4) in a Mc-QAM constellation.
| Original language | English |
|---|---|
| Pages (from-to) | 17-21 |
| Number of pages | 5 |
| Journal | IEEE Transactions on Communications |
| Volume | 57 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2009 Feb 19 |
Fingerprint
Keywords
- Diversity methods
- Maximum likelihood decoding (MLD)
- Multidimensional rotated constellations
- Space-time block codes (STBC)
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Real-domain decoder for full-rate full-diversity STBC with multidimensional constellations. / Lee, Heunchul; Cho, Jungho; Kim, Jong Kyu; Lee, Inkyu.
In: IEEE Transactions on Communications, Vol. 57, No. 1, 19.02.2009, p. 17-21.Research output: Contribution to journal › Article
}
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
PY - 2009/2/19
Y1 - 2009/2/19
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(Mc N/2) to O(Mc N/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(Mc N/2) to O(Mc N/4) in a Mc-QAM constellation.
KW - Diversity methods
KW - Maximum likelihood decoding (MLD)
KW - Multidimensional rotated constellations
KW - Space-time block codes (STBC)
UR - http://www.scopus.com/inward/record.url?scp=60149109337&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=60149109337&partnerID=8YFLogxK
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 -