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The icosian code and the e8 lattice: A new 4 × 4 space-time code with non-vanishing determinant

Publication ,  Journal Article
Liu, J; Calderbank, AR
Published in: IEEE International Symposium on Information Theory - Proceedings
December 1, 2006

This paper introduces a new full-rate, full-diversity space-time code for 4 transmit antennas. The 4 × 4 codeword matrix consists of four 2 × 2 Alamouti blocks with entries from Q(i, √5), and these blocks can be viewed as quaternions which in turn represent rotations in R3. The Alamouti blocks that appear in a codeword are drawn from the icosian ring consisting of all linear combinations of 120 basic rotations corresponding to symmetries of the icosahedron. This algebraic structure is different from the Golden code, but the complex entries are taken from a similar underlying field. The minimum determinant is bounded below by a constant that is independent of the signal constellation, and the new code admits a simple decoding scheme that makes use of a geometric correspondence between the icosian ring and the E 8 lattice. © 2006 IEEE.

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Published In

IEEE International Symposium on Information Theory - Proceedings

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Publication Date

December 1, 2006

Start / End Page

1006 / 1010
 

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Liu, J., & Calderbank, A. R. (2006). The icosian code and the e8 lattice: A new 4 × 4 space-time code with non-vanishing determinant. IEEE International Symposium on Information Theory - Proceedings, 1006–1010. https://doi.org/10.1109/ISIT.2006.261879
Liu, J., and A. R. Calderbank. “The icosian code and the e8 lattice: A new 4 × 4 space-time code with non-vanishing determinant.” IEEE International Symposium on Information Theory - Proceedings, December 1, 2006, 1006–10. https://doi.org/10.1109/ISIT.2006.261879.
Liu J, Calderbank AR. The icosian code and the e8 lattice: A new 4 × 4 space-time code with non-vanishing determinant. IEEE International Symposium on Information Theory - Proceedings. 2006 Dec 1;1006–10.
Liu, J., and A. R. Calderbank. “The icosian code and the e8 lattice: A new 4 × 4 space-time code with non-vanishing determinant.” IEEE International Symposium on Information Theory - Proceedings, Dec. 2006, pp. 1006–10. Scopus, doi:10.1109/ISIT.2006.261879.
Liu J, Calderbank AR. The icosian code and the e8 lattice: A new 4 × 4 space-time code with non-vanishing determinant. IEEE International Symposium on Information Theory - Proceedings. 2006 Dec 1;1006–1010.

Published In

IEEE International Symposium on Information Theory - Proceedings

DOI

Publication Date

December 1, 2006

Start / End Page

1006 / 1010