2018
DOI: 10.1109/comst.2018.2835558
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Abstract: Abstract-In the 5th generation (5G) of wireless communication systems, hitherto unprecedented requirements are expected to be satisfied. As one of the promising techniques of addressing these challenges, non-orthogonal multiple access (NOMA) has been actively investigated in recent years. In contrast to the family of conventional orthogonal multiple access (OMA) schemes, the key distinguishing feature of NOMA is to support a higher number of users than the number of orthogonal resource slots with the aid of no… Show more

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Cited by 1,009 publications
(626 citation statements)
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References 144 publications
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“…1) Power Allocation for EH-powered NOMA: The power allocation policy for NOMA determines the interference cancellation capability of the receivers, and directly affects the throughput and user fairness of NOMA [242]. For EHpowered NOMA, power constraints need to be involved in the development of power allocation schemes.…”
Section: B Multipoint-to-point Systemsmentioning
confidence: 99%
“…1) Power Allocation for EH-powered NOMA: The power allocation policy for NOMA determines the interference cancellation capability of the receivers, and directly affects the throughput and user fairness of NOMA [242]. For EHpowered NOMA, power constraints need to be involved in the development of power allocation schemes.…”
Section: B Multipoint-to-point Systemsmentioning
confidence: 99%
“…To estimate the source signal θ with recovery vector x, a best-linear-unbiased-estimator is used at the fusion center [9, Lesson 9]. To be specific, the fusion center estimates θ in each slot throughθ = f T x, (11) in which f = [f 1 , f 2 , · · · , f K ] is a positive weighting vector satisfying f T 1 K = 1. By optimizing the MSE of the estimator over all possible weighting vectors and using Assumption A4, the minimum achievable MSE is given by [9, Lesson 9,…”
Section: Estimation Modelmentioning
confidence: 99%
“…Although the transformed problem is not equivalent to the original problem, the gap caused by this transformation is acceptable. According to (11) and (12), we transformed the interference from other users in the achievable rates of the PU m and SU m i (2)-(3) to (13)- (14). The interference of the SU m i depends on the transmit power and the channel gains of other weak users.…”
Section: Problem Transformationmentioning
confidence: 99%
“…Unlike the orthogonal MA (OMA) technology where radio resources are allocated orthogonally to multiple users, NOMA allows multiple users with different channel state information to simultaneously occupy the same spectrum resource and distinguishes the signals of users in the power domain . At the receiver, the received superimposed signal is decoded by multiuser detection techniques, such as successive interference cancelation (SIC) technology . Although NOMA increases the complexity of the receiver, it has the advantages of improved spectral efficiency, massive connectivity, low transmission latency, and low signaling cost …”
Section: Introductionmentioning
confidence: 99%
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