@inproceedings{f4c6ffc9dbd54d83830bdb65b25069a2,
title = "Some simple observations on MISO codes",
abstract = "This paper considers certain aspects of some well-known multiple-input single-output (MISO) codes. In the first section it is proved how in some special cases the n + 1 MISO channel can be seen as consisting of several parallel MISO channels having less transmit antennas. It is also pointed out that unitary conjugation does not change the diversity-multiplexing tradeoff (DMT) of a code. These simple results are then applied to analyze the DMT of several well-known MISO codes. In particular its is proved that all the considered codes are DMT optimal. As a by-product of this study it is seen that the full-diversity quasi-orthogonal codes by Su and Xia are unitarily equivalent to division algebraic constructions. This relation is then used to place the constructions by Su and Xia into a wider context. In the latter part of the paper the 2 + 1 slow fading MISO channel is considered and it is proven that one of the previously proposed MISO multi-block codes (MB-codes) has a linear worst-case sphere decoding complexity.",
author = "Roope Vehkalahti and Camilla Hollanti and Jyrki Lahtonen and Francis Lu",
year = "2010",
month = dec,
day = "1",
doi = "10.1109/ISITA.2010.5654389",
language = "English",
isbn = "9781424460175",
series = "ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications",
pages = "537--541",
booktitle = "ISITA/ISSSTA 2010 - 2010 International Symposium on Information Theory and Its Applications",
note = "null ; Conference date: 17-10-2010 Through 20-10-2010",
}