Feedback Bandwidth Allocation for Users under Different Types of Channels in Multi-Antenna Systems

• DING Lv

  National Mobile Communications Research Laboratory, Southeast University

• XU Wei

  Department of Electrical and Computer Engineering, University of Victoria

• JIANG Bin

  National Mobile Communications Research Laboratory, Southeast University

• GAO Xiqi

  National Mobile Communications Research Laboratory, Southeast University

Abstract

This paper considers an optimized limited feedback design for a multi-antenna system serving multiple users under different types of channels: Rayleigh distributed and line-of-sight distributed channels. Since the users are asymmetric, we propose an optimized feedback bandwidth allocation scheme for users under a total feedback rate constraint. The allocation scheme is designed according to the long-term channel type information of users, and thus it can be efficiently implemented. Numerical results verify the effectiveness of our proposed scheme.

Journal

• IEICE Transactions on Communications

  IEICE Transactions on Communications E93-B (7), 1980-1983, 2010

  The Institute of Electronics, Information and Communication Engineers

Keywords

• multiple-input multiple-output
• zero-forcing beamforming
• broadcast channel
• limited feedback

Details

• CRID: 1390001204376021504
• NII Article ID: 10027366912
• NII Book ID: AA10826261
• DOI: 10.1587/transcom.e93.b.1980
• BIBCODE: 2010IEITC..93.1980D
• ISSN: 17451345
• ISSN: 09168516
• Web Site: http://www.jstage.jst.go.jp/article/transcom/E93.B/7/E93.B_7_1980/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed