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- W4312428480 abstract "Among the realm of ultra-reliable and low-latency communication (URLLC), a challenging problem is how to realize an efficient transmission meeting both latency and reliability requirements. As a promising technique to tackle the above problem, cooperative non-orthogonal multiple access (C-NOMA) has gained much attention in recent years. When the relay (R) is close to the source, the superior of C-NOMA has been verified if the cooperation is implemented in the first phase. However, the case where R is close to the destination, which also frequently appears in the cooperative transmission, has not been well investigated for URLLC yet. To fill up this gap, we propose a packet re-management based C-NOMA transmission scheme in which the cooperation is implemented in the second phase. Further, considering the importance of power consumption, we aim for jointly optimizing blocklength, power, re-managed packet size, and block error rate to minimize the power consumption subject to URLLC requirements and the maximum power constraint. To tackle the above non-convex and implicit problem, we first propose an algorithm to obtain a sub-optimal solution. Then, an extended algorithm is proposed to further approach the optimal solution. Simulation results verify the effectiveness of the proposed scheme and algorithms." @default.
- W4312428480 created "2023-01-04" @default.
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- W4312428480 date "2023-03-01" @default.
- W4312428480 modified "2023-10-15" @default.
- W4312428480 title "Power Consumption Minimization for Packet Re-Management Based C-NOMA in URLLC: Cooperation in the Second Phase of Relaying" @default.
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- W4312428480 doi "https://doi.org/10.1109/twc.2022.3208659" @default.
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