Title :
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
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;
Conference_Titel :
Communications (ICC), 2013 IEEE International Conference on
Conference_Location :
Budapest
DOI :
10.1109/ICC.2013.6655416
