Distributed User Pairing and Transmission Mode Selection in a Single Cell Full Duplex Network

• Published in: IEEE Vehicular Technology Conference pp. 1 - 5
• Main Authors: Chang, Yao-Yuan, Su, Hsuan-Jung
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.09.2019
• Subjects: Fading channels; Heuristic algorithms; Indexes; Interference cancellation; Resource management; Signal to noise ratio
• ISSN: 2577-2465
• DOI: 10.1109/VTCFall.2019.8891069

Full duplex (FD) communication can potentially provide double spectral efficiency as compared to the conventional half duplex (HD) scheme, thus it is being considered for the next generation wireless networks. To achieve the potential of FD communication in a multi-user network, user pairing and power allocation, which usually require accurate knowledge of the channel state information (CSI), are very important for alleviating the effect of the self-interference (SI) and inter-user interference (IUI). However, the cost (e.g., pilot and signaling overhead) of acquiring accurate CSI is usually high, especially for acquiring the CSI between user equipments (UEs). To trade off between system performance and the cost of acquiring CSI, this work considers that the base station (BS) has only the distance information (equivalent to average CSI) between the BS and the UEs. Based on the distance information, the problem of maximizing the sum rate in a single cell multiuser network subject to maximum power constraints and minimum required signal to interference plus noise power ratio (SINR) is formulated, and a heuristic algorithm to approach the solution is proposed. Simulation results show that the proposed algorithm can effectively exploit the potential gain of FD communication with reasonable system overhead and complexity.