Paper Info
Title
On throughput gain of interference alignment in multi-hop MIMO networks
Abstract
In this paper, we investigate the potential throughput gain brought by cooperative interference alignment (IA) in multi-hop MIMO networks. Unlike the fully-connected K-user interference network where IA is usually considered, IA cooperations in multi-hop MIMO networks are limited by node density, leading to an inevitable coexistence of IA and non-IA links. Though cooperating links within the same IA group can nullify intra-group interference via IA, uncoordinated inter-group interferences as well as the interferences from non-IA links retain with noises. Hence, whether or not IA can brought throughput gain for such networks is still an open question. In allusion to this question, we firstly extend a cross-layer PHY-MAC model for MIMO networks to jointly abstract the IA and non-IA links with a set of transmission patterns. Then we formulate the problem of throughput-optimal topology control for multi-hop MIMO networks with IA and that without IA and prove their NP-hardness. We further propose integer linear mathematical models for the formulated problems and investigate the benefits of IA cooperations via simulations. Simulation results show that regardless of the number of antennas, IA cooperations do not offer noticeable throughput gain in random networks.
Year
DOI
Venue
2014
10.1109/ICC.2014.6883295
ICC
Keywords
Field
DocType
fully connected k-user interference network,radio links,cooperative interference alignment,optimal control,cooperative communication,node density,throughput-optimal topology control,throughput,integer programming,intragroup interference nullification,telecommunication network topology,non-ia link,linear programming,uncoordinated intergroup interference,throughput gain,transmission pattern,multi-hop mimo network,mimo communication,multihop mimo network,ia cooperation,interference suppression,interference alignment,cooperating link,integer linear mathematical model,cross-layer phy-mac model,signal to noise ratio,topology,mathematical model,network topology,interference,mimo
Integer,3G MIMO,Topology control,Computer science,Computer network,MIMO,Interference (wave propagation),Hop (networking),Throughput,Interference alignment
Conference
ISSN
Citations 
PageRank 
1550-3607
0
0.34
References 
Authors
12
4
Name
Order
Citations
PageRank
Xin Ao1203.45
Fei Yu25116335.58
Shengming Jiang363162.04
Huaqiang Yuan4459.16