Title :
A class of two by two unitary signal constellations for differential space-time modulation
Author :
Liang, Xue-Bin ; Xia, Xiang-Gen
Author_Institution :
Dept. of Electr. & Comput. Eng., Delaware Univ., Newark, DE, USA
Abstract :
We introduce a novel class of unitary signal constellations for differential space-time modulation with two transmit antennas, called parametric codes, generated from the parametric form of 2×2 unitary matrices. Parametric codes lead to a signal constellation of size five with the best possible diversity product of √(5/8) and another one of size sixteen which has the best known diversity product of 4√(2/2) among the existing unitary space-time codes and is a subset of a unitary group of order thirty two
Keywords :
codes; matrix algebra; modulation; 2×2 unitary matrices; differential space-time modulation; diversity product; parametric codes; transmit antennas; unitary signal constellations; unitary space-time codes; Bit error rate; Constellation diagram; Modulation coding; Quaternions; Rayleigh channels; Receiving antennas; Signal generators; Space time codes; Transmitters; Transmitting antennas;
Conference_Titel :
Information Theory, 2001. Proceedings. 2001 IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7123-2
DOI :
10.1109/ISIT.2001.935944
