Paper Info
Title
NOMA-Aided Multi-Way Massive MIMO Relay Networks
Abstract
We propose a novel transmission protocol for multi-way relay networks (MWRNs) in which the number of time-slots required for full mutual multi-way data exchange among K user nodes can be reduced to just two from inverted right perpendicular(K - 1)/2 inverted left perpendicular + 1 in the current state-of-the-art. The proposed MWRN adopts superposition-coded transmission, successive interference cancellation (SIC) reception, power-domain non-orthogonal multiple-access (NOMA) and linear detection/precoding facilitated by massive multiple-input multiple-output (MIMO). First, the user nodes transmit their signals to a massive MIMO-enabled relay, where a linear detector based on maximal ratio combining criterion is used for signal reception. Next, the relay composes a superposition-coded signal for each user node and transmits towards the user nodes by using a linear precoder based on maximal ratio transmission criterion. User nodes perform SIC-based decoding for retrieving symbols sent by the remaining K user nodes. Thus, our proposed MWRN protocol completes the full mutual multi-way data exchange among all users within two time-slots. We derive the achievable sum rate of it via the so-called worst-case Gaussian approximation and show that a significant spectral efficiency gain can be achieved over the existing MWRN counterparts.
Year
DOI
Venue
2019
10.1109/ICC.2019.8761576
IEEE International Conference on Communications
Field
DocType
ISSN
Noma,Mimo relay,Computer science,Computer network
Conference
1550-3607
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
Shashindra Silva1152.65
Gayan Amarasuriya226626.50
Masoud Ardakani338042.88
C. Tellambura44889374.02