Power-Domain Non-Orthogonal Multiple Access (NOMA) in 5G Systems: Potentials and Challenges
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In this paper, the authors comprehensively survey the recent progress of NOMA in 5G systems, reviewing the state-of-the-art capacity analysis, power allocation strategies, user fairness, and user-pairing schemes in NOMAs.Abstract:
Non-orthogonal multiple access (NOMA) is one of the promising radio access techniques for performance enhancement in next-generation cellular communications. Compared to orthogonal frequency division multiple access (OFDMA), which is a well-known high-capacity orthogonal multiple access (OMA) technique, NOMA offers a set of desirable benefits, including greater spectrum efficiency. There are different types of NOMA techniques, including power-domain and code-domain. This paper primarily focuses on power-domain NOMA that utilizes superposition coding (SC) at the transmitter and successive interference cancellation (SIC) at the receiver. Various researchers have demonstrated that NOMA can be used effectively to meet both network-level and user-experienced data rate requirements of fifth-generation (5G) technologies. From that perspective, this paper comprehensively surveys the recent progress of NOMA in 5G systems, reviewing the state-of-the-art capacity analysis, power allocation strategies, user fairness, and user-pairing schemes in NOMA. In addition, this paper discusses how NOMA performs when it is integrated with various proven wireless communications techniques, such as cooperative communications, multiple input multiple output (MIMO), beamforming, space time coding, and network coding, among others. Furthermore, this paper discusses several important issues on NOMA implementation and provides some avenues for future research.read more
Citations
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MPDMAC-SIC: Priority-based distributed low delay MAC with successive interference cancellation for multi-hop industrial wireless networks
TL;DR: The proposed protocol, MPDMAC-SIC, is the first priority based distributed MAC protocol that employs SIC to provide low access delay and accommodate different types of traffic for multi-hop industrial wireless networks.
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Rate Fairness and Power Consumption Optimization for NOMA-Assisted Downlink Networks
TL;DR: This paper considers a non-orthogonal multiple access (NOMA) downlink network, where a hybrid of NOMA and beamforming designs is developed to enhance the channel capacity, and proposes two low-complexity algorithms based on the inner-approximation method.
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Hybrid multiple access for 5G downlink systems: Throughput and outage analysis
TL;DR: An optimization problem is formulated and solved numerically to obtain optimal groups size resulting in optimal throughput and the exact closed-form expression for the outage probability is derived.
Proceedings ArticleDOI
Performance of Cooperative NOMA System with a Full-Duplex Relay over Nakagami-m Fading Channels
TL;DR: This paper investigates the outage performance of a system combining techniques of non-orthogonal multiple access (NOMA) and full-duplex (FD) in cooperative communication over Nakagami-m fading channels and derives closed-form expressions for outage probability of two users.
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Full-Duplex Non-Orthogonal Multiple Access Cooperative Overlay Spectrum-Sharing Networks With SWIPT
TL;DR: In this article, the authors proposed a non-orthogonal multiple access (NOMA) assisted cooperative spectrum sharing network, in which one of the full-duplex (FD) secondary transmitters (STs) is chosen among many for forwarding the primary transmitter's and its own information to primary receiver and secondary receivers, respectively, using NOMA technique.
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