TY - JOUR
T1 - Some 2 × 2 unitary space-time codes from sphere packing theory with optimal diversity product of code size 6
AU - Wang, Haiquan
AU - Wang, Genyuan
AU - Xia, Xiang Gen
PY - 2004/12
Y1 - 2004/12
N2 - In this correspondence, we propose some new designs of 2 × 2 unitary space-time codes of sizes 6, 32, 48, 64 with best-known diversity products (or product distances) by partially using sphere packing theory. In particular, we present an optimal 2 × 2 unitary space-time code of size 6 in the sense that it reaches the maximal possible diversity product for 2 × 2 unitary space-time codes of size 6. The construction and the optimality of the code of size 6 provide the precise value of the maximal diversity product of a 2 × 2 unitary space-time code of size 6.
AB - In this correspondence, we propose some new designs of 2 × 2 unitary space-time codes of sizes 6, 32, 48, 64 with best-known diversity products (or product distances) by partially using sphere packing theory. In particular, we present an optimal 2 × 2 unitary space-time code of size 6 in the sense that it reaches the maximal possible diversity product for 2 × 2 unitary space-time codes of size 6. The construction and the optimality of the code of size 6 provide the precise value of the maximal diversity product of a 2 × 2 unitary space-time code of size 6.
KW - Differential space-time modulation
KW - Optimal diversity product
KW - Packing theory
KW - Unitary space-time codes
UR - http://www.scopus.com/inward/record.url?scp=10644221281&partnerID=8YFLogxK
U2 - 10.1109/TIT.2004.838105
DO - 10.1109/TIT.2004.838105
M3 - Article
AN - SCOPUS:10644221281
SN - 0018-9448
VL - 50
SP - 3361
EP - 3368
JO - IEEE Transactions on Information Theory
JF - IEEE Transactions on Information Theory
IS - 12
ER -