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- W2803764005 abstract "In this thesis, the two-user Gaussian interference channel with noisy channel-output feedback (GIC-NOF) is studied from two perspectives: centralized and decentralized networks. From the perspective of centralized networks, the fundamental limits of the two-user GIC-NOF are characterized by the capacity region. One of the main contributions of this thesis is an approximation to within a constant number of bits of the capacity region of the two-user GIC-NOF. This result is obtained through the analysis of a simpler channel model, ie a two-user linear deterministic interference channel with noisy channel-output feedback (LDIC-NOF). The analysis to obtain the capacity region of the two-user LDIC-NOF provides the main insights required to analyze the two-user GIC-NOF. %From the perspective of decentralized networks, the fundamental limits of the two-user decentralized GIC-NOF (D-GIC-NOF) are characterized by the $eta$-Nash equilibrium ($eta$-NE) region. Another contribution of this thesis is an approximation of the $eta$-NE region of the two-user GIC-NOF, with $eta > 1$. As in the centralized case, the two-user decentralized LDIC-NOF (D-LDIC-NOF) is studied first and the lessons learnt are applied in the two-user D-GIC-NOF. The final contribution of this thesis consists in a closed-form answer to the question: ``When does channel-output feedback enlarge the capacity or $eta$-NE regions of the two-user GIC-NOF or two-user D-GIC-NOF?''. This answer is of the form: emph{Implementing channel-output feedback in transmitter-receiver $i$ enlarges the capacity or $eta$-NE regions if the feedback SNR is beyond $textrm{SNR}_i^{*}$, with $i in lbrace 1,2 rbrace$. The approximate value of $textrm{SNR}_i^{*}$ is shown to be a function of all the other parameters of the two-user GIC-NOF or two-user D-GIC-NOF." @default.
- W2803764005 created "2018-06-01" @default.
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- W2803764005 date "2017-12-12" @default.
- W2803764005 modified "2023-09-27" @default.
- W2803764005 title "Noisy channel-output feedback in the interference channel" @default.
- W2803764005 hasPublicationYear "2017" @default.
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