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

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.

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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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