TIIS (한국인터넷정보학회)
Current Result Document :
| 한글제목(Korean Title) |
Optimal Power Allocation for NOMA-based Cellular Two-Way Relaying |
| 영문제목(English Title) |
Optimal Power Allocation for NOMA-based Cellular Two-Way Relaying |
| 저자(Author) |
Guosheng Li
|
| 원문수록처(Citation) |
VOL 17 NO. 01 PP. 0202 ~ 0215 (2023. 01) |
한글내용
(Korean Abstract) |
|
영문내용
(English Abstract) |
This paper proposes a non-orthogonal multiple access (NOMA) based low-complexity relaying approach for multiuser cellular two-way relay channels (CTWRCs). In the proposed scheme, the relay detects the signal using successive interference cancellation (SIC) and re-generates the transmit signal with zero-forcing (ZF) transmit precoding. The achievable data rates of the NOMA-based multiuser two-way relaying (TWR) approach is analyzed. We further study the power allocation among different data streams to maximize the weighted sum-rate (WSR). We re-form the resultant non-convex problem into a standard monotonic program. Then, we design a polyblock outer approximation algorithm to sovle the WSR problem.The proposed optimal power allocation algorithm converges fast and it is shown that the NOMA-TWR-OPA scheme outperforms a NOMA benchmark scheme and conventional TWR schemes. |
| 키워드(Keyword) |
Two-way relay channels
NOMA
optimal power allocation
|
| 파일첨부 |
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