Lattice coding for Rician fading channels from Hadamard rotations

Loading...
Thumbnail Image
Journal Title
Journal ISSN
Volume Title
Conference article in proceedings
Date
2017-08-09
Major/Subject
Mcode
Degree programme
Language
en
Pages
5
3110-3114
Series
2017 IEEE International Symposium on Information Theory, ISIT 2017
Abstract
In this paper, we study lattice coding for Rician fading wireless channels. This is motivated in particular by preliminary studies suggesting the Rician fading model for millimeter-wavelength wireless communications. We restrict to lattice codes arising from rotations of Zn, and to a single-input single-output (SISO) channel. We observe that several lattice design criteria suggest the optimality of Hadamard rotations. For instance, we prove that Hadamard rotations maximize the diamond-packing density among all rotated Zn lattices. Finally, we provide simulations to show that Hadamard rotations outperform optimal algebraic rotations and cross-packing lattices in the Rician channel.
Description
Keywords
algebraic rotations, diamond packings, Hadamard rotations, lattice code design, orthogonal lattices, reliability, Rician fading, single-input single-output (SISO) channels
Other note
Citation
Karrila , A , Väisänen , N , Karpuk , D & Hollanti , C 2017 , Lattice coding for Rician fading channels from Hadamard rotations . in 2017 IEEE International Symposium on Information Theory, ISIT 2017 . , 8007102 , IEEE , pp. 3110-3114 , IEEE International Symposium on Information Theory , Aachen , Germany , 25/06/2017 . https://doi.org/10.1109/ISIT.2017.8007102