Rate-Matching Precoder Design Based on Rate-Splitting Multiple Access for Heterogeneous Traffic Demands 


Vol. 48,  No. 5, pp. 524-530, May  2023
10.7840/kics.2023.48.5.524


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  Abstract

With the changes in main traffic of wireless communications from mobile voice to mobile multimedia data by the evolution of high data rate wireless applications, the traffic demands of users have become different from each other. Therefore, it is indispensable to satisfy such traffic demands with limited resources such as transmit power and time/frequency. However, existing technologies, namely sum-rate maximization and max-min fairness which only consider the improvement of the quality of the networks, cannot solve the individual requirements of users. To tackle this, in this paper, we propose a novel rate-matching framework using rate-splitting multiple access (RSMA) that minimizes the difference between the traffic demands and offered rate. Moreover, to handle the non-convexity of the problem, we employ a successive convex approximation to convert the problem to convex and derive the suboptimal solution efficiently. Numerical results show the superiority of the proposed scheme over the conventional schemes in terms of fulfillment of traffic demands.

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[IEEE Style]

JaehyupSeong, JuhwanLee, JuhaPark, WonjaeShin, "Rate-Matching Precoder Design Based on Rate-Splitting Multiple Access for Heterogeneous Traffic Demands," The Journal of Korean Institute of Communications and Information Sciences, vol. 48, no. 5, pp. 524-530, 2023. DOI: 10.7840/kics.2023.48.5.524.

[ACM Style]

JaehyupSeong, JuhwanLee, JuhaPark, and WonjaeShin. 2023. Rate-Matching Precoder Design Based on Rate-Splitting Multiple Access for Heterogeneous Traffic Demands. The Journal of Korean Institute of Communications and Information Sciences, 48, 5, (2023), 524-530. DOI: 10.7840/kics.2023.48.5.524.

[KICS Style]

JaehyupSeong, JuhwanLee, JuhaPark, WonjaeShin, "Rate-Matching Precoder Design Based on Rate-Splitting Multiple Access for Heterogeneous Traffic Demands," The Journal of Korean Institute of Communications and Information Sciences, vol. 48, no. 5, pp. 524-530, 5. 2023. (https://doi.org/10.7840/kics.2023.48.5.524)
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