OFDM Mobile Packet Transmission System with Multiuser Detection and Metric Combining ARQ

• NAGAREDA Riichiro

  Tokyo Institute of Technology

• FUKAWA Kazuhiko

  Tokyo Institute of Technology

• SUZUKI Hiroshi

  Tokyo Institute of Technology

Abstract

This paper proposes an OFDM mobile packet transmission scheme that increases throughput by using nonlinear multiuser detection (MUD) and automatic repeat request (ARQ) with metric-combining. The scheme identifies users by detecting user identification (ID) symbols located at the head of a packet, and can separate packets that have collided by using MUD. It also forces the respective transmitters to retransmit the same packets so as to reproduce the collision if the cyclic redundancy check (CRC) detects some errors, and it uses metric-combining to decrease the number of retransmissions. The results of computer simulations show that the proposed scheme can provide twice the throughput of the conventional schemes.

Journal

• IEICE Trans. Communi., B

  IEICE Trans. Communi., B 88 (1), 106-114, 2005-01-01

  The Institute of Electronics, Information and Communication Engineers

Keywords

• OFDM
• packet transmission
• ARQ
• multiuser detection
• metric combining

Details

• CRID: 1570009752411873280
• NII Article ID: 110003222579
• NII Book ID: AA10826261
• ISSN: 09168516
• Text Lang: en
• Data Source:
  • CiNii Articles