PMID- 30759775
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20190214
LR  - 20200225
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 19
IP  - 3
DP  - 2019 Feb 12
TI  - NOMA-Assisted Multiple Access Scheme for IoT Deployment: Relay Selection Model 
      and Secrecy Performance Improvement.
LID - 10.3390/s19030736 [doi]
LID - 736
AB  - In this paper, an Internet-of-Things (IoT) system containing a relay selection is 
      studied as employing an emerging multiple access scheme, namely non-orthogonal 
      multiple access (NOMA). This paper proposes a new scheme to consider secure 
      performance, to be called relay selection NOMA (RS-NOMA). In particular, we 
      consider metrics to evaluate secure performance in such an RS-NOMA system where a 
      base station (master node in IoT) sends confidential messages to two main sensors 
      (so-called NOMA users) under the influence of an external eavesdropper. In the 
      proposed IoT scheme, both two NOMA sensors and an illegal sensor are served with 
      different levels of allocated power at the base station. It is noticed that such 
      RS-NOMA operates in two hop transmission of the relaying system. We formulate the 
      closed-form expressions of secure outage probability (SOP) and the strictly 
      positive secure capacity (SPSC) to examine the secrecy performance under 
      controlling setting parameters such as transmit signal-to-noise ratio (SNR), the 
      number of selected relays, channel gains, and threshold rates. The different 
      performance is illustrated as performing comparisons between NOMA and orthogonal 
      multiple access (OMA). Finally, the advantage of NOMA in secure performance over 
      orthogonal multiple access (OMA) is confirmed both analytically and numerically.
FAU - Do, Dinh-Thuan
AU  - Do DT
AUID- ORCID: 0000-0003-2072-069X
AD  - Wireless Communications Research Group, Faculty of Electrical and Electronics 
      Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam. 
      dodinhthuan@tdtu.edu.vn.
FAU - Van Nguyen, Minh-Sang
AU  - Van Nguyen MS
AD  - Industrial University of Ho Chi Minh City (IUH), Ho Chi Minh City, Vietnam. 
      nguyenvanminhsang@iuh.edu.vn.
FAU - Hoang, Thi-Anh
AU  - Hoang TA
AD  - Industrial University of Ho Chi Minh City (IUH), Ho Chi Minh City, Vietnam. 
      hoangthianh@iuh.edu.vn.
FAU - Voznak, Miroslav
AU  - Voznak M
AUID- ORCID: 0000-0001-5135-7980
AD  - Department of Telecommunications, VSB-Technical University of Ostrava, 708 00 
      Ostrava, Czech Republic. miroslav.voznak@vsb.cz.
LA  - eng
PT  - Journal Article
DEP - 20190212
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
PMC - PMC6386980
OTO - NOTNLM
OT  - IoT
OT  - NOMA
OT  - relay selection
OT  - secure outage probability
OT  - strictly positive secure capacity
COIS- The authors declare no conflict of interest.
EDAT- 2019/02/15 06:00
MHDA- 2019/02/15 06:01
PMCR- 2019/02/01
CRDT- 2019/02/15 06:00
PHST- 2019/01/08 00:00 [received]
PHST- 2019/01/26 00:00 [revised]
PHST- 2019/02/07 00:00 [accepted]
PHST- 2019/02/15 06:00 [entrez]
PHST- 2019/02/15 06:00 [pubmed]
PHST- 2019/02/15 06:01 [medline]
PHST- 2019/02/01 00:00 [pmc-release]
AID - s19030736 [pii]
AID - sensors-19-00736 [pii]
AID - 10.3390/s19030736 [doi]
PST - epublish
SO  - Sensors (Basel). 2019 Feb 12;19(3):736. doi: 10.3390/s19030736.