TY - JOUR
T1 - Cognitive Non-Orthogonal Multiple Access with Cooperative Relaying
T2 - A New Wireless Frontier for 5G Spectrum Sharing
AU - Lv, Lu
AU - Chen, Jian
AU - Ni, Qiang
AU - Ding, Zhiguo
AU - Jiang, Hai
N1 - Funding Information:
The work of L. Lv and J. Chen was supported in part by the National Natural Science Foundation of China under Grants 61771366 and 61601347, and in part by the "111" project of China under Grant B08038. The work of Q. Ni was supported by the EU FP7 CROWN project under Grant PIRSES-GA-2013-610524. The work of Z. Ding was supported in part by the UK EPSRC under Grant EP/N005597/1, and in part by H2020-MSCA-RISE-2015 under Grant 690750. The work of H. Jiang was supported by the Natural Sciences and Engineering Research Council of Canada.
Funding Information:
The work of L. Lv and J. Chen was supported in part by the National Natural Science Foundation of China under Grants 61771366 and 61601347, and in part by the “111” project of China under Grant B08038. The work of Q. Ni was supported by the EU FP7 CROWN project under Grant PIRSES-GA-2013-610524. The work of Z. Ding was supported in part by the UK EPSRC under Grant EP/N005597/1, and in part by H2020-MSCA-RISE-2015 under Grant 690750. The work of H. Jiang was supported by the Natural Sciences and Engineering Research Council of Canada.
Publisher Copyright:
© 1979-2012 IEEE.
PY - 2018/4
Y1 - 2018/4
N2 - Two emerging technologies toward 5G wireless networks, namely non-orthogonal multiple access (NOMA) and cognitive radio (CR), will provide more efficient utilization of wireless spectrum in the future. In this article, we investigate the integration of NOMA with CR into a holistic system, namely a cognitive NOMA network, for more intelligent spectrum sharing. Design principles of cognitive NOMA networks are perfectly aligned to functionality requirements of 5G wireless networks, such as high spectrum efficiency, massive connectivity, low latency, and better fairness. Three different cognitive NOMA architectures are presented, including underlay NOMA networks, overlay NOMA networks, and CR-inspired NOMA networks. To address inter-network and intra-network interference, which largely degrade the performance of cognitive NOMA networks, cooperative relaying strategies are proposed. For each cognitive NOMA architecture, our proposed cooperative relaying strategy shows its potential to significantly lower outage probabilities. We discuss open challenges and future research directions on implementation of cognitive NOMA networks.
AB - Two emerging technologies toward 5G wireless networks, namely non-orthogonal multiple access (NOMA) and cognitive radio (CR), will provide more efficient utilization of wireless spectrum in the future. In this article, we investigate the integration of NOMA with CR into a holistic system, namely a cognitive NOMA network, for more intelligent spectrum sharing. Design principles of cognitive NOMA networks are perfectly aligned to functionality requirements of 5G wireless networks, such as high spectrum efficiency, massive connectivity, low latency, and better fairness. Three different cognitive NOMA architectures are presented, including underlay NOMA networks, overlay NOMA networks, and CR-inspired NOMA networks. To address inter-network and intra-network interference, which largely degrade the performance of cognitive NOMA networks, cooperative relaying strategies are proposed. For each cognitive NOMA architecture, our proposed cooperative relaying strategy shows its potential to significantly lower outage probabilities. We discuss open challenges and future research directions on implementation of cognitive NOMA networks.
UR - http://www.scopus.com/inward/record.url?scp=85041844348&partnerID=8YFLogxK
U2 - 10.1109/MCOM.2018.1700687
DO - 10.1109/MCOM.2018.1700687
M3 - Article
AN - SCOPUS:85041844348
SN - 0163-6804
VL - 56
SP - 188
EP - 195
JO - IEEE Communications Magazine
JF - IEEE Communications Magazine
IS - 4
ER -