New paper accepted

A new paper from the group has been accepted for publication

The paper «Expectation Propagation Detection for High-order High-dimensional MIMO Systems» by Javier Céspedes, Pablo M. Olmos, Matilde Sánchez-Fernández and Fernando Perez-Cruz has been accepted for publication by the IEEE Transactions on Communications.
Modern communications systems use multiple-input multiple-output (MIMO) and high-order QAM constellations for maximizing spectral efficiency. However, as the number of antennas and the order of the constellation grow, the design of efficient and low-complexity MIMO receivers possesses big technical challenges. For example, symbol detection can no longer rely on maximum likelihood detection or sphere-decoding methods, as their complexity increases exponentially with the number of transmitters/receivers. In this paper, we propose a low-complexity high-accuracy MIMO symbol detector based on the Expectation Propagation (EP) algorithm. EP allows approximating iteratively at polynomial-time the posterior distribution of the transmitted symbols. We also show that our EP MIMO detector outperforms classic and state-of-the-art solutions reducing the symbol error rate at a reduced computational complexity.