Adaptive Equalization Technique for OFDM Demodulation

• Hayashi Kenichiro

  Advanced Digital Television Broadcasting Laboratory

• Kimura Tomohiro

  Advanced Digital Television Broadcasting Laboratory

• Kageyama Sadashi

  Advanced Digital Television Broadcasting Laboratory

• Harada Yasuo

  Advanced Digital Television Broadcasting Laboratory

• Kisoda Akira

  Advanced Digital Television Broadcasting Laboratory

• Sakashita Seiji

  Matsushita Electric Industrial Co., Ltd., Multimedia Development Center

Bibliographic Information

Other Title

• OFDM復調における適応等化方式の検討

Abstract

This paper proposes an adaptive equalization technique for OFDM (Orthogonal Frequency Division Multiplexing) demodulation. This technique estimates a channel response with using pilot signals embedded in OFDM symbols. A two dimensional filter used for interpolating the response estimates the channel response accurately, and also improves the C/N by reducing noise bandwidth. The bit error rate performance of the system in various channels is calculated by computer simulation, and the relative C/N improvement to differential demodulation is about 2.5 dB. And the result shows that the optimum filter can be determined by the maximum path delay time and the maximum doppler frequency of the channel.

Journal

• ITE Technical Report

  ITE Technical Report 20 (53), 55-60, 1996

  The Institute of Image Information and Television Engineers

Details

• CRID: 1390001204522237312
• NII Article ID: 110003680491
• NII Book ID: AN00352231
• DOI: 10.11485/tvtr.20.53_55
• ISSN: 24330914
• ISSN: 03864227
• Text Lang: ja
• Data Source:
  • JaLC
  • CiNii Articles
• Abstract License Flag: Disallowed