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Joint user pairing, subchannel, and power allocation in full-duplex multi-user OFDMA networks
Di, B ; Sharif University of Technology
519
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- Type of Document: Article
- DOI: 10.1109/TWC.2016.2613533
- Publisher: Institute of Electrical and Electronics Engineers Inc
- Abstract:
- In this paper, the resource allocation and scheduling problem for a full-duplex (FD) orthogonal frequency-division multiple-access network is studied where an FD base station simultaneously communicates with multiple pairs of uplink (UL) and downlink (DL) half-duplex (HD) users bidirectionally. In this paper, we aim to maximize the network sum-rate through joint UL and DL user pairing, OFDM subchannel assignment, and power allocation. We formulate the problem as a non-convex optimization problem. The optimal algorithm requires an exhaustive search, which will become prohibitively complicated as the numbers of users and subchannels increase. To tackle this complex problem more efficiently, we formulate the user-pairing and subchannel allocation problem as a three-sided matching problem, and propose a novel low-complexity near-optimal matching algorithm. The algorithm is analyzed, and we prove that it converges to a stable matching. Simulation results show that the FD scheme can significantly improve the spectrum efficiency compared with the HD scheme. The proposed algorithm performs very close to the optimal algorithm, and significantly outperforms other resource allocation schemes
- Keywords:
- Matching theory ; Complex networks ; Convex optimization ; Finite difference method ; Mobile telecommunication systems ; Optimization ; Orthogonal frequency division multiplexing ; Resource allocation ; Scheduling ; Allocation and scheduling ; Full-duplex ; Nonconvex optimization ; Orthogonal frequency division multiple access ; Resource allocation schemes ; Scheduling problem ; Subchannel allocation ; Frequency division multiple access
- Source: IEEE Transactions on Wireless Communications ; Volume 15, Issue 12 , 2016 , Pages 8260-8272 ; 15361276 (ISSN)
- URL: http://ieeexplore.ieee.org/document/7576717