Paper Info
Title
Small Cell Range Expansion with Interference Mitigation for Downlink Massive MIMO HetNets.
Abstract
We propose a downlink cell-edge-aware zero forcing (CEA-ZF) and block diagonalization (BD) cooperative precoding scheme to reduce the downlink interference caused by the small cell range expansion in a heterogeneous network (HetNet). The CEA-ZF precoding algorithm adopted in the downlink transmission of macro base station (MBS) exploits the spatial degrees of freedom from large antenna array to suppress the inter-cell interference, and the BD precoding algorithm is introduced in the small access point (SAP) to eliminate the multi-user interference. Simulation results demonstrate the benefits of the proposed downlink precoding scheme over the alternative approach, and verify the proposed scheme as a more effective interference mitigation scheme for the downlink massive multiple-input multiple-output (MIMO) HetNet. Moreover, the optimal range expansion bias (REB) of small cell range expansion is obtained, and we also give a lower bound for the UE sum-rate of the proposed precoding scheme.
Year
DOI
Venue
2018
10.1109/GLOCOM.2018.8647788
IEEE Global Communications Conference
Field
DocType
ISSN
Topology,Upper and lower bounds,Computer science,Downlink transmission,MIMO,Antenna array,Real-time computing,Interference (wave propagation),Heterogeneous network,Precoding,Telecommunications link
Conference
2334-0983
Citations 
PageRank 
References 
0
0.34
0
Authors
5
Name
Order
Citations
PageRank
Shanjin Ni191.55
Zhao Junhui213919.70
howard hua yang321632.06
Tony Q. S. Quek43621276.75
Yi Gong56712.12