Paper Info
Title
Degrees-of-Freedom of the MIMO Three-Way Channel with Node-Intermittency.
Abstract
The characterization of fundamental performance bounds of many-to-many communication systems in which participating nodes are active in an intermittent way is one of the major challenges in communication theory. In order to address this issue, we introduce the multiple-input multiple-output (MIMO) three-way channel (3WC) with an intermittent node and study its degrees-of-freedom (DoF) region and sum-DoF. We devise a non-adaptive encoding scheme based on zero-forcing, interference alignment and erasure coding, and show its DoF region (and thus sum-DoF) optimality for non-intermittent 3WCs and its sum-DoF optimality for (node-)intermittent 3WCs. However, we show by example that in general some DoF tuples in the intermittent 3WC can only be achieved by adaptive schemes, such as multi-hop or decode-forward relaying. This shows that non-adaptive encoding is sufficient for the non-intermittent 3WC and for the sum-DoF of intermittent 3WCs, but adaptive encoding is necessary for the DoF region of intermittent 3WCs. Our work contributes to a better understanding of the fundamental limits of multi-way communication systems with intermittency and the impact of adaptation therein.
Year
DOI
Venue
2017
10.1109/TIT.2019.2919548
IEEE Transactions on Information Theory
Keywords
Field
DocType
Device-to-device communication,MIMO communication,Channel coding,Interference,Signal to noise ratio,Relays
MIMO-OFDM,Topology,Mathematical optimization,3G MIMO,MIMO,Communication channel,Communications system,Erasure code,Mathematics,Precoding,Spatial multiplexing
Journal
Volume
Issue
ISSN
abs/1708.08161
10
0018-9448
Citations 
PageRank 
References 
0
0.34
21
Authors
4
Name
Order
Citations
PageRank
Joachim Neu133.47
Anas Chaaban238736.44
Aydin Sezgin359675.27
Alouini Mohamed-Slim4122611194.14