Low-complexity dominance-based Sphere Decoder for MIMO Systems
Information Theory
2013-03-05 v1 math.IT
Abstract
The sphere decoder (SD) is an attractive low-complexity alternative to maximum likelihood (ML) detection in a variety of communication systems. It is also employed in multiple-input multiple-output (MIMO) systems where the computational complexity of the optimum detector grows exponentially with the number of transmit antennas. We propose an enhanced version of the SD based on an additional cost function derived from conditions on worst case interference, that we call dominance conditions. The proposed detector, the king sphere decoder (KSD), has a computational complexity that results to be not larger than the complexity of the sphere decoder and numerical simulations show that the complexity reduction is usually quite significant.
Cite
@article{arxiv.1303.0699,
title = {Low-complexity dominance-based Sphere Decoder for MIMO Systems},
author = {Gianmarco Romano and Domenico Ciuonzo and Pierluigi Salvo Rossi and Francesco Palmieri},
journal= {arXiv preprint arXiv:1303.0699},
year = {2013}
}