Precoder design with non-uniform power allocation for multimode precoded MIMO schemes with limited feedback

Rong Ran, Sungyoon Cho, Janghoon Yang, Dongku Kim

Research output: Contribution to journalArticle

Abstract

This paper investigates the problem of designing a code-book with non-uniform power allocation for multimode precoded MIMO schemes (e.g., spatial multiplexing and STBC) with limited feedback in fading channels. The generalized Lloyd algorithm is employed for the design, and two methods with different complexities are addressed for the computation of the centroid which is formulated as an optimization problem. Numerical results show that the proposed design outperforms comparable algorithms which equally allocate the total transmit power to each data stream.

Original languageEnglish
Pages (from-to)1002-1007
Number of pages6
Journalieice electronics express
Volume7
Issue number14
DOIs
Publication statusPublished - 2010 Jul 25

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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