Approximated Capacity of the Two-User Gaussian Interference Channel with Noisy Channel-Output Feedback
Résumé
—In this paper, the capacity region of the two-user Gaussian interference with noisy channel-output feedback (G-IC-NOF) is approximated to within 4.3 bits per channel use. To this end, a new achievable region and a new converse region are presented. Existing results such as: (a) the approximated capacity of the two-user Gaussian interference channel introduced by Etkin et al.; (b) the approximated capacity of the two-user Gaussian interference channel with perfect channel-output feedback introduced by Suh et al; and (c) the approximated capacity of the symmetric two-user G-IC-NOF introduced by Le et al., can be obtained as special cases of the results presented here.
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