PMID- 29419795
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180222
LR  - 20181113
IS  - 1424-8220 (Electronic)
IS  - 1424-8220 (Linking)
VI  - 18
IP  - 2
DP  - 2018 Feb 8
TI  - Non-Orthogonal Multiple Access for Ubiquitous Wireless Sensor Networks.
LID - 10.3390/s18020516 [doi]
LID - 516
AB  - Ubiquitous wireless sensor networks (UWSNs) have become a critical technology for 
      enabling smart cities and other ubiquitous monitoring applications. Their 
      deployment, however, can be seriously hampered by the spectrum available to the 
      sheer number of sensors for communication. To support the communication needs of 
      UWSNs without requiring more spectrum resources, the power-domain non-orthogonal 
      multiple access (NOMA) technique originally proposed for 5th Generation (5G) 
      cellular networks is investigated for UWSNs for the first time in this paper. 
      However, unlike 5G networks that operate in the licensed spectrum, UWSNs mostly 
      operate in unlicensed spectrum where sensors also experience cross-technology 
      interferences from other devices sharing the same spectrum. In this paper, we 
      model the interferences from various sources at the sensors using stochastic 
      geometry framework. To evaluate the performance, we derive a theorem and present 
      new closed form expression for the outage probability of the sensors in a 
      downlink scenario under interference limited environment. In addition, diversity 
      analysis for the ordered NOMA users is performed. Based on the derived outage 
      probability, we evaluate the average link throughput and energy consumption 
      efficiency of NOMA against conventional orthogonal multiple access (OMA) 
      technique in UWSNs. Further, the required computational complexity for the NOMA 
      users is presented.
FAU - Anwar, Asim
AU  - Anwar A
AD  - Department of Electrical and Electronic Engineering, Auckland University of 
      Technology, Auckland 1010, New Zealand. asim.anwar@aut.ac.nz.
FAU - Seet, Boon-Chong
AU  - Seet BC
AUID- ORCID: 0000-0002-9511-7521
AD  - Department of Electrical and Electronic Engineering, Auckland University of 
      Technology, Auckland 1010, New Zealand. boon-chong.seet@aut.ac.nz.
FAU - Ding, Zhiguo
AU  - Ding Z
AD  - School of Computing and Communications, Lancaster University, Lancaster LA1 4YW, 
      UK. z.ding@lancaster.ac.uk.
LA  - eng
PT  - Journal Article
DEP - 20180208
PL  - Switzerland
TA  - Sensors (Basel)
JT  - Sensors (Basel, Switzerland)
JID - 101204366
PMC - PMC5856021
OTO - NOTNLM
OT  - cross-technology interference
OT  - non-orthogonal multiple access
OT  - stochastic geometry
OT  - ubiquitous wireless sensor networks
OT  - unlicensed spectrum
COIS- The authors declare no conflict of interest.
EDAT- 2018/02/09 06:00
MHDA- 2018/02/09 06:01
PMCR- 2018/02/01
CRDT- 2018/02/09 06:00
PHST- 2017/12/31 00:00 [received]
PHST- 2018/02/03 00:00 [revised]
PHST- 2018/02/07 00:00 [accepted]
PHST- 2018/02/09 06:00 [entrez]
PHST- 2018/02/09 06:00 [pubmed]
PHST- 2018/02/09 06:01 [medline]
PHST- 2018/02/01 00:00 [pmc-release]
AID - s18020516 [pii]
AID - sensors-18-00516 [pii]
AID - 10.3390/s18020516 [doi]
PST - epublish
SO  - Sensors (Basel). 2018 Feb 8;18(2):516. doi: 10.3390/s18020516.