Skip to content


  • Research Article
  • Open Access

Feedback Quantization for Linear Precoded Spatial Multiplexing

EURASIP Journal on Advances in Signal Processing20082008:683030

  • Received: 15 June 2007
  • Accepted: 8 January 2008
  • Published:


This paper gives an overview and a comparison of recent feedback quantization schemes for linear precoded spatial multiplexing systems. In addition, feedback compression methods are presented that exploit the time correlation of the channel. These methods can be roughly divided into two classes. The first class tries to minimize the data rate on the feedback link while keeping the performance constant. This class is novel and relies on entropy coding. The second class tries to optimize the performance while using the maximal data rate on the feedback link. This class is presented within the well-developed framework of finite-state vector quantization. Within this class, existing as well as novel methods are presented and compared.


  • Entropy
  • Time Correlation
  • Vector Quantization
  • Full Article
  • Compression Method

Publisher note

To access the full article, please see PDF.

Authors’ Affiliations

Faculty of Electrical Engineering, Mathematics and Computer Science, Delft University of Technology, Mekelweg 4, 2628 CD Delft, The Netherlands


© C. Simon and G. Leus. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.