Proceedings of the International Workshop on Applications of Neural Networks to Telecommunications

Implementing the Optimal CDMA Multiuser Detector with Hopfield Neural Networks

George I. Kechriotis and Elias S. Manolakos

Communications and Digital Signal Processing (CDSP)Center for Research and Graduate Studies Electrical and Computer Engineering Dept.Northeastern University, Boston, MA 02115

Abstract

We propose a novel implementation of the CDMA optimal multiuser detector (OMD) based on the Hopfield Neural Networks (HNN).We show how the OMD’s objective function can be mapped to a HNN energy function and we evaluate the proposed detector via extensive simulations and theoretical analysis. Its is shown that the HNN detector outperforms by far the conventional detector and has a performance comparable to that of the OMD at a much lower computational ...