DocumentCode
1201206
Title
Improved signal constellations for differential unitary space-time modulations with more than two transmit antennas
Author
Soh, Thian Ping ; Ng, Chun Sum ; Kam, Pooi Yuen
Author_Institution
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Volume
9
Issue
1
fYear
2005
Firstpage
7
Lastpage
9
Abstract
In this paper, we propose new and improved unitary signal constellations for differential unitary space-time modulations utilizing more than two transmit antennas. The proposed unitary designs are constructed from fundamental building blocks which comprise the generator matrices of diagonal cyclic codes, and the 2×2 and 3×3 rotational matrices. The performances of the proposed codes are superior to those of previously proposed codes.
Keywords
antenna arrays; cyclic codes; fading channels; matrix algebra; modulation coding; space-time codes; transmitting antennas; diagonal cyclic codes; differential unitary space-time modulations; fading channel; generator-rotational matrices; multiple transmit antennas; signal constellations; Constellation diagram; Fading; Gaussian noise; Helium; Modulation coding; Rayleigh channels; Receiving antennas; Scattering; Signal to noise ratio; Transmitting antennas;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2005.01023
Filename
1375224
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