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

By Bruno Clerckx, Yijie Mao, Robert Schober, H. Vincent Poor. IEEE Wireless Communications Letters, 2019

322 citations recorded by the source corpus.

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.

Subfields: Computer Networks and Communications, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/f45e58908361339e8f0e1ccd42255720be605363

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Computer Networks and Communications

1. Robert Schober
2. H. Vincent Poor
3. Zhiguo Ding
4. Dusist Niyato
5. Eduard Axel Jorswieck
6. Yijie Mao
7. Yuanwei Liu
8. D. J. Love

In Electrical and Electronic Engineering

1. Robert Schober
2. Yuanwei Liu
3. H. Vincent Poor
4. Zhiguo Ding
5. Rui Zhang
6. Naofal Al-Dhahir
7. Xidong Mu
8. Dusist Niyato

Citations in the corpus

• A Primer on Rate-Splitting Multiple Access: Tutorial, Myths, and Frequently Asked Questions (2022, methodology): “8 and the message to stream mapping in Table IV [24].”
• Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends (2022, methodology): “Following the evaluations in [34], we illustrate the preferred operational regions for RSMA, SDMA, NOMA, and OMA for the two-user MISO BC with perfect CSIT in Fig.”
• Evolution of NOMA Toward Next Generation Multiple Access (NGMA) for 6G (2021, result): “Therefore, compared to SDMA, RSMA provides more flexibility in mitigating interference [40].”