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Improved signal constellations for differential unitary space-time modulations with more than two transmit antennas

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3 Author(s)
Thian Ping Soh ; Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore ; Chun Sum Ng ; Pooi Yuen Kam

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.

Published in:

Communications Letters, IEEE  (Volume:9 ,  Issue: 1 )