Aligned interference neutralisation for 2×2×2 interference channel with imperfect channel state information

Author

Ustok, Refik Fatih ; Dmochowski, Pawel A. ; Smith, Peter J. ; Shafi, M.

Author_Institution

Sch. of Eng. & Comput. Sci., Victoria Univ. of Wellington, Wellington, New Zealand

fYear

2013

fDate

9-13 June 2013

Firstpage

5230

Lastpage

5235

Abstract

We investigate the efficiency of interference alignment for 2 × 2 × 2 interference networks formed by concatenation of two user interference channels under the assumption of imperfect channel state information. We show that, as a result of cumulative noise in zero forcing receivers, aligned interference neutralisation is not practical when perfect channel state information is not available. We give analytical SNR and SINR expressions at relays and receivers and also provide some simulation results using a channel estimation error model.

Keywords

ad hoc networks; cellular radio; channel estimation; radio receivers; radiofrequency interference; relay networks (telecommunication); wireless LAN; wireless channels; SINR expression; SNR expression; aligned interference neutralisation; cellular networks; channel estimation error model; imperfect channel state information; interference alignment efficiency; interference networks; user interference channels; wireless ad-hoc networks; wireless local area networks; Array signal processing; Interference; Receivers; Relays; Signal to noise ratio; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications (ICC), 2013 IEEE International Conference on

Conference_Location

Budapest

ISSN

1550-3607

Type

conf

DOI

10.1109/ICC.2013.6655416

Filename

6655416