Optimum Adaptive Modulation and Channel Coding Scheme for Frequency Domain Channel-Dependent Scheduling in OFDM Based Evolved UTRA Downlink

• MIKI Nobuhiko

  Radio Access Network Development Department, NTT DOCOMO, INC.

• KISHIYAMA Yoshihisa

  Radio Access Network Development Department, NTT DOCOMO, INC.

• HIGUCHI Kenichi

  Department of Electrical Engineering, Tokyo University of Science

• SAWAHASHI Mamoru

  Department of Information Network Engineering, Musashi Institute of Technology

• NAKAGAWA Masao

  Department of Information and Computer Science, Keio University

Abstract

In the Evolved UTRA (UMTS Terrestrial Radio Access) downlink, Orthogonal Frequency Division Multiplexing (OFDM) based radio access was adopted because of its inherent immunity to multipath interference and flexible accommodation of different spectrum arrangements. This paper presents the optimum adaptive modulation and channel coding (AMC) scheme when resource blocks (RBs) is simultaneously assigned to the same user when frequency and time domain channel-dependent scheduling is assumed in the downlink OFDMA radio access with single-antenna transmission. We start by presenting selection methods for the modulation and coding scheme (MCS) employing mutual information both for RB-common and RB-dependent modulation schemes. Simulation results show that, irrespective of the application of power adaptation to RB-dependent modulation, the improvement in the achievable throughput of the RB-dependent modulation scheme compared to that for the RB-common modulation scheme is slight, i.e., 4 to 5%. In addition, the number of required control signaling bits in the RB-dependent modulation scheme becomes greater than that for the RB-common modulation scheme. Therefore, we conclude that the RB-common modulation and channel coding rate scheme is preferred, when multiple RBs of the same coded stream are assigned to one user in the case of single-antenna transmission.

Journal

• IEICE Transactions on Communications

  IEICE Transactions on Communications E92.B (5), 1527-1537, 2009

  The Institute of Electronics, Information and Communication Engineers

Keywords

• Evolved UTRA
• adaptive modulation and channel coding
• OFDM
• frequency-domain channel-dependent scheduling

Details

• CRID: 1390282679349669504
• NII Article ID: 10026837851
• NII Book ID: AA10826261
• DOI: 10.1587/transcom.e92.b.1527
• ISSN: 17451345
• ISSN: 09168516
• Web Site: https://www.jstage.jst.go.jp/article/transcom/E92.B/5/E92.B_5_1527/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed