ADMM-based Subcarrier Allocation and Power Control for Uplink OFDMA Channels

Wang, Zijian;Mou, Yuting;Vandendorpe, Luc
(2019) 2019 IEEE Wireless Communications and Networking Conference (WCNC) — Location: Marrakesh, Morocco (15.April.2019)

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Authors
  • Wang, ZijianUCLouvain
    Author
  • Mou, Yutingorcid-logoUCLouvain
    Author
  • Vandendorpe, LucUCLouvain
    Author
Abstract
In this paper, the problem of subcarrier allocation and power control for uplink orthogonal frequency division multiple access (OFDMA) channels is studied. Each user may have a different strategy of power control due to his/her own limits of battery, quality-of-service (QoS) requirement, and the amount of information to transmit. The problem is first formulated as a minimization problem, and the alternating direction method of multipliers (ADMM) is then introduced to solve the problem in a distributed manner. Necessary conditions of each subproblem are derived to obtain a deeper understanding in the structure of the solutions. Numerical results show that the algorithm converges fast and obtains a near-optimal solution within only a few iterations.
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Wang, Z., Mou, Y., & Vandendorpe, L. (2019). ADMM-based Subcarrier Allocation and Power Control for Uplink OFDMA Channels. 2019 IEEE Wireless Communications and Networking Conference (WCNC). Published. 2019 IEEE Wireless Communications and Networking Conference (WCNC), Marrakesh, Morocco. https://doi.org/10.1109/wcnc.2019.8885699