Interference Management in Heterogeneous Networks with Blind Transmitters
Vaia Kalokidou, Oliver Johnson, Robert Piechocki

TL;DR
This paper introduces two interference management schemes, BIA and a hybrid TIM-NOMA, for heterogeneous networks without CSI, demonstrating significant improvements in sum rate and Degrees of Freedom over traditional methods.
Contribution
The paper proposes novel interference management schemes using user-pairing and Kronecker Product representation for heterogeneous networks without CSI.
Findings
Both schemes double the rate of TDMA.
Hybrid scheme outperforms TDMA and BIA in DoF.
BIA offers better BER and sum rate for macrocell users.
Abstract
Future multi-tier communication networks will require enhanced network capacity and reduced overhead. In the absence of Channel State Information (CSI) at the transmitters, Blind Interference Alignment (BIA) and Topological Interference Management (TIM) can achieve optimal Degrees of Freedom (DoF), minimising network's overhead. In addition, Non-Orthogonal Multiple Access (NOMA) can increase the sum rate of the network, compared to orthogonal radio access techniques currently adopted by 4G networks. Our contribution is two interference management schemes, BIA and a hybrid TIM-NOMA scheme, employed in heterogeneous networks by applying user-pairing and Kronecker Product representation. BIA manages inter- and intra-cell interference by antenna selection and appropriate message scheduling. The hybrid scheme manages intra-cell interference based on NOMA and inter-cell interference based on…
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Taxonomy
TopicsAdvanced Wireless Communication Technologies · Advanced MIMO Systems Optimization · Cooperative Communication and Network Coding
