TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Freudenberger, Jürgen
A1  - Shavgulidze, Sergo
T1  - New Four-Dimensional Signal Constellations From Lipschitz Integers for Transmission Over the Gaussian Channel
JF  - IEEE Transactions on Communications
N2  - Codes over quotient rings of Lipschitz integers have recently attracted some attention. This work investigates the performance of Lipschitz integer constellations for transmission over the AWGN channel by means of the constellation figure of merit. A construction of sets of Lipschitz integers that leads to a better constellation figure of merit compared to ordinary Lipschitz integer constellations is presented. In particular, it is demonstrated that the concept of set partitioning can be applied to quotient rings of Lipschitz integers where the number of elements is not a prime number. It is shown that it is always possible to partition such quotient rings into additive subgroups in a manner that the minimum Euclidean distance of each subgroup is strictly larger than in the original set. The resulting signal constellations have a better performance for transmission over an additive white Gaussian noise channel compared to Gaussian integer constellations and to ordinary Lipschitz integer constellations. In addition, we present multilevel code constructions for the new signal constellations.
Y1  - 2015
SN  - 1558-0857
SS  - 1558-0857
U6  - https://doi.org/10.1109/TCOMM.2015.2441691
DO  - https://doi.org/10.1109/TCOMM.2015.2441691
VL  - Volume 63
IS  - Issue 7
SP  - 2420
EP  - 2427
ER  -