Reduced Complexity Vector Precoding for the Multiuser Downlink

— We investigate nonlinear precoding techniques for the downlink of multi-user systems from a transmitter equipped with multiple antennas to non-cooperative single antenna mobile receivers. The contribution of this paper is the extension of the tree-structured vector precoding algorithm with a search radius estimation based on the statistics of the precoded symbols to reduce the number of evaluated nodes. Simulation results reveal a significant reduction of computational complexity at the expense of only slight performance degradations.

• Type: Conference
• Year: 2006
• Where: GLOBECOM
• Authors: René Habendorf, Ines Riedel, Gerhard Fettweis
• Keywords: Antenna Mobile Receivers, GLOBECOM 2006, Nonlinear Precoding Techniques, Slight Performance Degradations, Telecommunications