Evaluation of the capacity of Rate-Splitting Multiple Access communication systems

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Аннотация

The Rate-Splitting Multiple Access (RSMA) method for multi-antenna communication systems is described. The sequence of operations for RSMA signal formation and processing is presented. RSMA usage scenarios in communication systems are considered, and the efficiency of this method is substantiated. Capacity estimates of the RSMA method are obtained in comparison with other multiple access methods. Numerical modeling of the average capacity per user is conducted using the QuaDRiGa tool. It is shown that RSMA achieves higher capacity compared to other multiple access methods used in multi-antenna communication systems.

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D. Pokamestov

Tomsk State University of Control Systems and Radioelectronics

Хат алмасуға жауапты Автор.
Email: dmaltomsk@mail.ru
Ресей, prosp. Lenina, 40, Tomsk, 634050

А. Filatov

Tomsk State University of Control Systems and Radioelectronics

Email: dmaltomsk@mail.ru
Ресей, prosp. Lenina, 40, Tomsk, 634050

Ya. Kryukov

Tomsk State University of Control Systems and Radioelectronics

Email: dmaltomsk@mail.ru
Ресей, prosp. Lenina, 40, Tomsk, 634050

А. Shinkevich

Tomsk State University of Control Systems and Radioelectronics

Email: dmaltomsk@mail.ru
Ресей, prosp. Lenina, 40, Tomsk, 634050

G. Shalin

Tomsk State University of Control Systems and Radioelectronics

Email: dmaltomsk@mail.ru
Ресей, prosp. Lenina, 40, Tomsk, 634050

Е. Rogozhnikov

Tomsk State University of Control Systems and Radioelectronics

Email: dmaltomsk@mail.ru
Ресей, prosp. Lenina, 40, Tomsk, 634050

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2. Fig. 1. Structural diagram of the RSMA communication system with one transmitter and K receivers.

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3. Fig. 2. Simplified diagram of the RSMA-based communication system with two subscribers.

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4. Fig. 3. Dependences of the average RMD values of subscribers: a – on |hc|2; b – on |hd|2; c – on P for the methods: OMA (1), RSMA (2), SDMA (3), NOMA (4).

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5. Fig. 4. Dependences of the average RMD value on the SNR for one subscriber of the communication system with RSMA (1) and SDMA (2).

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