Efficient feedback design for interference alignment in MIMO interference channel

Sungyoon Cho, Hyukjin Chae, Kaibin Huang, Dong Ku Kim, Vincent K.N. Lau, Hanbyul Seo

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

8 Citations (Scopus)

Abstract

Interference alignment (IA) is a joint-transmission technique that achieves the capacity of the interference channel for high signal-to-noise ratios (SNRs). However, most prior works on IA are based on the impractical assumption that perfect and global channel-state information(CSI) is available at all transmitters, resulting in overwhelming feedback overhead. To substantially suppress the feedback overhead, this paper proposes an efficient design of the feedback framework for IA in the K-user multiple-input multiple-output (MIMO) interference channel. The proposed feedback topology supports sequential CSI exchange (feedback and feedforward) between transmitters and receivers and reduces the feedback overhead from a cubic function of K to a linear one, compared to conventional feedback approaches. Given the proposed feedback topology, we consider the limited feedback channel from the receivers to corresponding interferers and analyze the effect of quantization error which generates the residual interference. Also, an efficient feedbackbit allocation algorithm that minimizes the upper-bound of sum residual interference is proposed.

Original languageEnglish
Title of host publicationIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings
DOIs
Publication statusPublished - 2012 Aug 20
EventIEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Yokohama, Japan
Duration: 2012 May 62012 Jun 9

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

OtherIEEE 75th Vehicular Technology Conference, VTC Spring 2012
CountryJapan
CityYokohama
Period12/5/612/6/9

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Cho, S., Chae, H., Huang, K., Kim, D. K., Lau, V. K. N., & Seo, H. (2012). Efficient feedback design for interference alignment in MIMO interference channel. In IEEE 75th Vehicular Technology Conference, VTC Spring 2012 - Proceedings [6240175] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2012.6240175