Radio resource management for OFDM-based dual-function radar-communication: sum-rate and fairness

EURASIP Journal on Wireless Communications and Networking - Tập 2024 Số 1
Jia Zhu1, Yuanhao Cui2, Junsheng Mu1, Zexuan Jing1, Xiaojun Jing1
1School of Information and Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing, 100876, China
2Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, 518055, China

Tóm tắt

AbstractThis paper focuses on radio resource management (RRM) in multi-user dual-function radar communication (DFRC) systems using orthogonal frequency division multiplexing (OFDM) waveforms. We propose two RRM schemes, one from the perspective of sum rate maximization and the other from the perspective of user fairness maximization. These optimization problems are non-convex due to the presence of mixed integer terms, making them difficult to solve. To address these challenges, we have employed a decomposition approach to transform these two complex problems into separate, more readily solvable ones. In addressing the sum rate maximization problem, we initially introduce a heuristic greedy algorithm to obtain a resource allocation scheme that satisfies radar performance requirements. Subsequently, we utilize a cyclic iterative method along with KKT conditions to solve the sum rate maximization problem for communication users. Concerning the fairness maximization problem for communication users, we similarly employ a heuristic greedy algorithm to obtain a resource allocation scheme that meets radar performance constraints. Then utilize the Lagrangian dual method to solve the multi-user fairness maximization problem for communication users. Our experimental results confirm the effectiveness of the proposed algorithms.

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EURASIP Journal on Wireless Communications and Networking

Tập 2024 Số 1

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