Removal of ICI and IBI in Wireless Heterogeneous Networks with Timing Misalignment

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

3 Scopus Citations
View graph of relations



Original languageEnglish
Article number7815329
Pages (from-to)1195-1198
Journal / PublicationIEEE Communications Letters
Issue number5
Online published10 Jan 2017
Publication statusPublished - May 2017


Since a small cell base station (SBS) of an orthogonal frequency division multiple access heterogeneous network (HetNet) does not intend to align arriving macrocell user signals, inter-carrier interference (ICI) and inter-block interference (IBI) inevitably arise in the uplink demodulation at the SBS. This paper proposes a novel precoding scheme based on interference alignment to remove the uplink ICI and IBI in a HetNet completely. The proposed scheme is able to remove the ceiling effect on the small cell uplink rate and increase the degrees of freedom of the system. Simulation results demonstrate the superiority of the scheme.

Research Area(s)

  • Heterogeneous networks, OFDMA, precoding