Frequency domain pre-equalization with transmit precoding for MIMO broadcast wireless channels

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13 Citations (Scopus)

Abstract

Recent research has shown that frequency domain pre-equalization (FDPE) can provide broadcast transmissions over multi-input multi-output (MIMO) frequency selective channels, where the multiple receivers need limited processing. In this paper, we consider the combination of FDPE with parallel and successive Tomlinson-Harashima Precoding (THP) and propose two novel FDPE MIMO schemes, which are referred to as FDPE-P-THP and FDPE-S-THP, respectively, based on the minimum mean square error (MMSE) criterion. The ordering algorithm in the FDPE-S-THP scheme is considered and it is shown that the system with even a randomly selected order can perform almost as well as that with the optimal one. This paper further develops an accurate theoretical performance analysis methodology for the proposed FDPE-THP schemes. Numerical results along with analytical results demonstrate the significant performance improvement of our proposed schemes compared to the conventional FDPE MIMO schemes. The channel estimation errors and channel variation effects on the proposed system are also investigated. It is shown that the performance degradation due to channel variation can be efficiently reduced by applying channel prediction.

Original languageEnglish
Pages (from-to)389-400
Number of pages12
JournalIEEE Journal on Selected Areas in Communications
Volume26
Issue number2
DOIs
Publication statusPublished - 1 Feb 2008

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Keywords

  • Channel estimation and prediction
  • Channel state information
  • Frequency domain pre-equalization
  • MIMO broadcast channel
  • Tomlinson-Harashima precoding

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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