A two-stage precoding method based on interference alignment for interference channel systems

Hakjea Sung, Seok Hwan Park, Kyoung Jae Lee, Inkyu Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Citations (Scopus)

Abstract

It was shown by Cadambe and Jafar that the interference alignment (IA) algorithm achieves the theoretical bound on degrees of freedom (DOF) for interference channel systems. However, since this method addresses the precoder design problem from the DOF point of view, some optimization processes are additionally needed in order to improve the sum rate performance. In this paper, based on the IA method, we propose a two-stage optimization of the precoding and decoding matrices in the interference channels. Simulation results show that the proposed method significantly improves the sum rate of the conventional IA scheme while maintaining the optimality of the DOF.

Original languageEnglish
Title of host publicationGLOBECOM - IEEE Global Telecommunications Conference
DOIs
Publication statusPublished - 2009 Dec 1
Event2009 IEEE Global Telecommunications Conference, GLOBECOM 2009 - Honolulu, HI, United States
Duration: 2009 Nov 302009 Dec 4

Other

Other2009 IEEE Global Telecommunications Conference, GLOBECOM 2009
CountryUnited States
CityHonolulu, HI
Period09/11/3009/12/4

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Sung, H., Park, S. H., Lee, K. J., & Lee, I. (2009). A two-stage precoding method based on interference alignment for interference channel systems. In GLOBECOM - IEEE Global Telecommunications Conference [5425263] https://doi.org/10.1109/GLOCOM.2009.5425263