Rate-Splitting Unifying SDMA, OMA, NOMA, and Multicasting in MISO Broadcast Channel: A Simple Two-User Rate Analysis

Clerckx B, Mao Y, Schober R, Poor HV (2020)

Publication Type: Journal article

Publication year: 2020

Journal

IEEE Wireless Communications Letters IEEE Communications Society

Book Volume: 9

Pages Range: 349-353

Article Number: 8907421

Journal Issue: 3

DOI: 10.1109/LWC.2019.2954518

Abstract

Considering a two-user multi-antenna Broadcast Channel, this letter shows that linearly precoded Rate-Splitting (RS) with Successive Interference Cancellation (SIC) receivers is a flexible framework for non-orthogonal transmission that generalizes, and subsumes as special cases, four seemingly different strategies, namely Space Division Multiple Access (SDMA) based on linear precoding, Orthogonal Multiple Access (OMA), Non-Orthogonal Multiple Access (NOMA) based on linearly precoded superposition coding with SIC, and physical-layer multicasting. This letter studies the sum-rate and shows analytically how RS unifies, outperforms, and specializes to SDMA, OMA, NOMA, and multicasting as a function of the disparity of the channel strengths and the angle between the user channel directions.

Authors with CRIS profile

Robert Schober Lehrstuhl für Digitale Übertragung (IDC)

Involved external institutions

Imperial College London / The Imperial College of Science, Technology and Medicine

United Kingdom (GB) Princeton University

United States (USA) (US)

How to cite

APA:

Clerckx, B., Mao, Y., Schober, R., & Poor, H.V. (2020). Rate-Splitting Unifying SDMA, OMA, NOMA, and Multicasting in MISO Broadcast Channel: A Simple Two-User Rate Analysis. IEEE Wireless Communications Letters, 9(3), 349-353. https://doi.org/10.1109/LWC.2019.2954518

MLA:

Clerckx, Bruno, et al. "Rate-Splitting Unifying SDMA, OMA, NOMA, and Multicasting in MISO Broadcast Channel: A Simple Two-User Rate Analysis." IEEE Wireless Communications Letters 9.3 (2020): 349-353.

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