中国邮电高校学报(英文版) ›› 2018, Vol. 25 ›› Issue (3): 17-23.doi: 10.19682/j.cnki.1005-8885.2018.0016

• Wireless • 上一篇    下一篇

Novel matrix representation for OFDM/OQAM systems

李中年,刘守印   

  1. 华中师范大学
  • 收稿日期:2017-07-05 修回日期:2018-03-29 出版日期:2018-06-29 发布日期:2018-06-30
  • 通讯作者: 李中年 E-mail:zhongnian.li@mail.ccnu.edu.cn

Novel matrix representation for OFDM/OQAM systems

  • Received:2017-07-05 Revised:2018-03-29 Online:2018-06-29 Published:2018-06-30
  • Contact: Zhongnian LI E-mail:zhongnian.li@mail.ccnu.edu.cn

摘要: In orthogonal frequency division multiplexing/offset quadrature amplitude modulation (OFDM/OQAM) systems, the relationship between the input of the synthesis filter bank (SFB) and the output of the analysis filter bank (AFB) is much more complicated than OFDM due to its special prototype filter. By analyzing the trans-multiplexer response characteristics, an equivalent trans-multiplexer matrix is proposed to describe the relationship between the input and the output. With the equivalent matrix, the output can be easily computed using matrix multiplication with the input. Moreover, with the inverse of the equivalent trans-multiplexer matrix, imaginary interference can be eliminated using the precoding method. The simulation results show the correctness of the equivalent trans-multiplexer matrix.

关键词: OFDM/OQAM, trans-multiplexer matrix, imaginary interference

Abstract: In orthogonal frequency division multiplexing/offset quadrature amplitude modulation (OFDM/OQAM) systems, the relationship between the input of the synthesis filter bank (SFB) and the output of the analysis filter bank (AFB) is much more complicated than OFDM due to its special prototype filter. By analyzing the trans-multiplexer response characteristics, an equivalent trans-multiplexer matrix is proposed to describe the relationship between the input and the output. With the equivalent matrix, the output can be easily computed using matrix multiplication with the input. Moreover, with the inverse of the equivalent trans-multiplexer matrix, imaginary interference can be eliminated using the precoding method. The simulation results show the correctness of the equivalent trans-multiplexer matrix.

Key words: OFDM/OQAM, trans-multiplexer matrix, imaginary interference