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arXiv · 1408.4994

Interference Alignment for Multicell Multiuser MIMO Uplink Channels

Khanh Pham·Kyungchun Lee
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Abstract

This paper proposes a linear interference alignment (IA) scheme which can be used for uplink channels in a general multicell multiuser MIMO cellular network. The proposed scheme aims to align interference caused by signals from a set of transmitters into a subspace which is established by the signals from only a subset of those transmitters, thereby effectively reducing the number of interfering transmitters. The total degrees of freedom (DoF) achievable by the proposed scheme is given in closed-form expression, and a numerical analysis shows that the proposed scheme can achieve the optimal DoF in certain scenarios and provides a higher total DoF than other related schemes in most cases.

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Khanh Pham, Kyungchun Lee. 2014-08-21. Interference Alignment for Multicell Multiuser MIMO Uplink Channels. https://arxiv.org/abs/1408.4994

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