A new hybrid division duplex scheme: orthogonal frequency division duplex (OFDD)

  • Authors:

  • Sungmook Lim;Jemin Lee;Taehoon Kwon;Daesik Hong

  • Affiliations:

  • Information and Telecommunication Lab., Dept. of Electrical and Electronic Eng., Yonsei Univ., Seoul, Korea;Information and Telecommunication Lab., Dept. of Electrical and Electronic Eng., Yonsei Univ., Seoul, Korea;Information and Telecommunication Lab., Dept. of Electrical and Electronic Eng., Yonsei Univ., Seoul, Korea;Information and Telecommunication Lab., Dept. of Electrical and Electronic Eng., Yonsei Univ., Seoul, Korea

  • Venue:
  • MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
  • Year:
  • 2009

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Abstract

In this paper, we propose orthogonal frequency division duplex (OFDD) which combines orthogonal division duplex (ODD) [1] and frequency division duplex (FDD) as a new hybrid division duplex scheme. In the asymmetric traffic environment, the mismatch of uplink and downlink between adjacent cells results in co-channel interference (CCI) which degrades the system performance. The proposed scheme can remove CCI of users at cell boundary by cell-partitioning. Furthermore, it can additionally reduce CCI of users at cell center by random sub-carrier allocation in ODD mode. From simulation results, we show that OFDD enhances average cell capacity by reducing CCI in the asymmetric traffic environment, compared with conventional schemes.