Interference Alignment with Limited Feedback on Two-cell Interfering Two-User MIMO-MAC - Computer Science > Information TheoryReportar como inadecuado




Interference Alignment with Limited Feedback on Two-cell Interfering Two-User MIMO-MAC - Computer Science > Information Theory - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Abstract: In this paper, we consider a two-cell interfering two-user multiple-inputmultiple-output multiple access channel MIMO-MAC with limited feedback. Wefirst investigate the multiplexing gain of such channel when users have perfectchannel state information at transmitter CSIT by exploiting an interferencealignment scheme. In addition, we propose a feedback framework for theinterference alignment in the limited feedback system. On the basis of theproposed feedback framework, we analyze the rate gap loss and it is shown thatin order to keep the same multiplexing gain with the case of perfect CSIT, thenumber of feedback bits per receiver scales as $B \geqM\!-1\!\!\log {2}\textsf{SNR}+C$, where $M$ and $C$ denote the number oftransmit antennas and a constant, respectively. Throughout the simulationresults, it is shown that the sum-rate performance coincides with the derivedresults.



Autor: Namyoon Lee, Wonjae Shin, Bruno Clerckx

Fuente: https://arxiv.org/



DESCARGAR PDF




Documentos relacionados