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A Minorization-Maximization Method for Optimizing Sum Rate in the Downlink of Non-Orthogonal Multiple Access Systems
Open accessAbstract
Non-orthogonal multiple access (NOMA) systems have the potential to deliver higher system throughput, compared with contemporary orthogonal multiple access techniques. For a linearly precoded multiple-input single-output (MISO) system, we study the downlink sum rate maximization problem, when the NOMA principle is applied. Being a non-convex and intractable optimization problem, we resort to approximate it with a minorization-maximization algorithm (MMA), which is a widely used tool in statistics. In each step of the MMA, we solve a second-order cone program, such that the feasibility set in each step contains that of the previous one, and is always guaranteed to be a subset of the feasibility set of the original problem. It should be noted that the algorithm takes a few iterations to converge. Furthermore, we study the conditions under which the achievable rates maximization can be further simplified to a low complexity design problem, and we compute the probability of occurrence of this event. Numerical examples are conducted to show a comparison of the proposed approach against conventional multiple access systems.
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Boyd, S., & Vandenberghe, L. (2004) · doi:10.1017/cbo9780511804441 · Cited by 56,601
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Self-citationThe Application of MIMO to Non-Orthogonal Multiple Access
Ding, Z., Adachi, F., & Poor, H. V. (2016) · IEEE Transactions on Wireless Communications · doi:10.1109/twc.2015.2475746 · Cited by 894
Self-citationMillimeter wave communication: a comprehensive survey
Wang, X., Kong, L., Kong, F., Qiu, F., Xia, M., Arnon, S., & Chen, G. (2018) · IEEE Communications Surveys & Tutorials · doi:10.1109/comst.2018.2844322 · Cited by 656
A Simple Design of IRS-NOMA Transmission
Ding, Z., & Vincent Poor, H. (2020) · IEEE Communications Letters · doi:10.1109/lcomm.2020.2974196 · Cited by 513
Self-citationEmbracing non-orthogonalmultiple access in future wireless networks
Ding, Z.-G., Xu, M., Chen, Y., Peng, M.-G., & Poor, H. V. (2018) · Frontiers of Information Technology & Electronic Engineering · doi:10.1631/fitee.1800051 · Cited by 31
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Metadata
- Authors
- Hanif, M. F., Ding, Z., Ratnarajah, T., & Karagiannidis, G. K.
- Venue
- IEEE Transactions on Signal Processing
- Published
- 2016-01
- Volume
- 64
- Issue
- 1
- Pages
- 76-88
- ISSN
- 1053-587X (ISSN-L)
- 1941-0476
- OpenAlex
- W2951205086
- Cited by
- 403
- References
- 1
- FWCI
- 23.09
- Type
- journal article
- Language
- en
- Open access
- green
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- Hanif, M. F., Ding, Z., Ratnarajah, T., & Karagiannidis, G. K. (2016). A Minorization-Maximization Method for Optimizing Sum Rate in the Downlink of Non-Orthogonal Multiple Access Systems. IEEE Transactions on Signal Processing. https://doi.org/10.1109/tsp.2015.2480042
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