Power-Domain Non-Orthogonal Multiple Access (NOMA) in 5G Systems: Potentials and Challenges
Reads0
Chats0
TLDR
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
More filters
Proceedings ArticleDOI
Sum-Rate Analysis of MIMO Based CR-NOMA Communication System
Prabhat Thakur,Ghanshyam Singh +1 more
TL;DR: This paper has exploited the key technologies of the next generation communication systems which are cognitive radio, non-orthogonal multiple access (NOMA) and multiple-input-multiple-output (MIMO) and proposed a framework of simultaneous use of these technologies for the spectral efficient design, named as MIMO based CR- NOMA communication systems.
Journal ArticleDOI
Improved Uplink NOMA Performance Through Adaptive Weighted Factors Aided PIC and MA Signature
TL;DR: An improved uplink NOMA scheme through adaptively weighted factors aided parallel interference cancellation (PIC) algorithm and multiple access (MA) signature is proposed to solve the problem of decode all users’ signals on the uplink precisely and in parallel.
Proceedings ArticleDOI
Adaptive Resource Allocation for ICIC in Downlink NOMA Systems
TL;DR: A centralized adaptive ICIC framework for downlink NOMA systems, including a distributed clustering algorithm, a distributed power allocation algorithm, and a centralized frequency allocation algorithm is proposed.
Journal ArticleDOI
Overlapped universal filtered multicarrier system for uplink wireless communication
Mingxuan Zhang,Weiwei Miao,Jian Dang,Zhengyang Ding,Shaqian Zhang,Zeng Zeng,Hao Tang,Mengting Wu,Zaichen Zhang,Liang Wu +9 more
TL;DR: A new transmitter structure for uplink wireless communication system based on UFMC waveform is proposed to allow a user to transmit its information on more than one subband simultaneously, increasing its robustness against frequency selectivity.
Proceedings ArticleDOI
An Optimal Finite Alphabet NOMA Scheme for Two-User Uplink Channels
TL;DR: This paper considers the design of a pair of scalar beamformers for these two users such that the minimum Euclidean distance of the received sum-constellation is maximized subject to each individual user power constraint and a closed-form optimal solution and the corresponding optimal sum constellation are attained.
References
More filters
Journal ArticleDOI
A simple transmit diversity technique for wireless communications
TL;DR: This paper presents a simple two-branch transmit diversity scheme that provides the same diversity order as maximal-ratio receiver combining (MRRC) with one transmit antenna, and two receive antennas.
Book
Fundamentals of Wireless Communication
David Tse,Pramod Viswanath +1 more
TL;DR: In this paper, the authors propose a multiuser communication architecture for point-to-point wireless networks with additive Gaussian noise detection and estimation in the context of MIMO networks.
Journal ArticleDOI
Millimeter Wave Mobile Communications for 5G Cellular: It Will Work!
Theodore S. Rappaport,Shu Sun,Rimma Mayzus,Hang Zhao,Yaniv Azar,Kevin H. Wang,George N. Wong,Jocelyn K. Schulz,Mathew K. Samimi,Felix Gutierrez +9 more
TL;DR: The motivation for new mm-wave cellular systems, methodology, and hardware for measurements are presented and a variety of measurement results are offered that show 28 and 38 GHz frequencies can be used when employing steerable directional antennas at base stations and mobile devices.
Journal ArticleDOI
Non-orthogonal multiple access for 5G: solutions, challenges, opportunities, and future research trends
TL;DR: The concept of software defined multiple access (SoDeMA) is proposed, which enables adaptive configuration of available multiple access schemes to support diverse services and applications in future 5G networks.
Journal ArticleDOI
Millimeter-Wave Cellular Wireless Networks: Potentials and Challenges
TL;DR: Measurements and capacity studies are surveyed to assess mmW technology with a focus on small cell deployments in urban environments and it is shown that mmW systems can offer more than an order of magnitude increase in capacity over current state-of-the-art 4G cellular networks at current cell densities.