A simple DoF-achievable scheme for the Gaussian interference channel with delayed CSIT

M Rezaee, PJ Schreier, M Guillaud… - 2015 IEEE Global …, 2015 - ieeexplore.ieee.org
2015 IEEE Global Communications Conference (GLOBECOM), 2015ieeexplore.ieee.org
We consider the two-user Multiple-Input-Multiple-Output Interference Channel (MIMO-IC)
with outdated channel state information at the transmitters (CSIT). For a fast-fading scenario,
the degrees-of-freedom (DoF) region for this channel has been characterized by Vaze and
Varanasi in [1]. We devise a simple achievable scheme, which has a unified structure for
different antenna configurations. In the proposed scheme, matrices with random entries
chosen from a continuous probability distribution are used in the process of designing the …
We consider the two-user Multiple-Input-Multiple-Output Interference Channel (MIMO-IC) with outdated channel state information at the transmitters (CSIT). For a fast- fading scenario, the degrees-of-freedom (DoF) region for this channel has been characterized by Vaze and Varanasi in [1]. We devise a simple achievable scheme, which has a unified structure for different antenna configurations. In the proposed scheme, matrices with random entries chosen from a continuous probability distribution are used in the process of designing the precoders. The unified structure of the precoders involving random matrices makes our scheme suitable for generalization to other networks.
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