Multiuser MIMO amplify-and-forward relaying schemes with vector precoding

Idoia Jimenez, Stephan Weiss, Mikel Mendicute, Egoitz Arruti

Research output: Contribution to conferencePaper

4 Citations (Scopus)

Abstract

A two-hop multiuser multiple-input multiple-output (MIMO) amplify-and-forward (AF) relay scenario is analyzed in this paper, where the main design challenge resides on the selection of the interdependent precoding and relaying matrices. After analyzing the optimal joint iterative linear design of the precoding and relaying matrices, two simpler non-iterative approaches are proposed and derived: hop-by-hop minimum mean squared error (MMSE) minimization and block diagonal geometric mean decomposition (BD-GMD). The combination of these two techniques and vector precoding (VP) is then proposed to greatly improve the performance of the systems. Provided simulation results prove that the combination of non-linear precoding and simpler matrix design strategies can outperform the optimal and complex joint iterative design with linear transmission.
Original languageEnglish
Pages514-519
Number of pages6
DOIs
Publication statusPublished - 2011
Event11th IEEE International Symposium on Signal Processing and Information Technology - Bilbao, Spain
Duration: 14 Dec 201117 Dec 2011

Conference

Conference11th IEEE International Symposium on Signal Processing and Information Technology
CountrySpain
CityBilbao
Period14/12/1117/12/11

Keywords

  • vector precoding
  • relaying schemes
  • MIMO

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    Jimenez, I., Weiss, S., Mendicute, M., & Arruti, E. (2011). Multiuser MIMO amplify-and-forward relaying schemes with vector precoding. 514-519. Paper presented at 11th IEEE International Symposium on Signal Processing and Information Technology, Bilbao, Spain. https://doi.org/10.1109/ISSPIT.2011.6151615