2017/01/30 by Mohamed A. Abd-Elmagid, Alessandro Biason, Abd-Elmagid, Mohamed A. +7
Engineering · #Advanced Wireless Communication Technologies #Energy Harvesting in Wireless Networks #FOS: Computer and information sciences #Information Theory (cs.IT) #IoT Networks and Protocols
paper · pdf · doi:10.48550/arxiv.1701.08526
openalex publication_date 2017/01/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We characterize time and power allocations to optimize the sum-throughput of\na Wireless Powered Communication Network (WPCN) with Non-Orthogonal Multiple\nAccess (NOMA). In our setup, an Energy Rich (ER) source broadcasts wireless\nenergy to several devices, which use it to simultaneously transmit data to an\nAccess Point (AP) on the uplink. Differently from most prior works, in this\npaper we consider a generic scenario, in which the ER and AP do not coincide,\ni.e., are two separate entities. We study two NOMA decoding schemes, namely Low\nComplexity Decoding (LCD) and Successive Interference Cancellation Decoding\n(SICD). For each scheme, we formulate a sum-throughput optimization problem\nover a finite horizon. Despite the complexity of the LCD optimization problem,\ndue to its non-convexity, we recast it into a series of geometric programs. On\nthe other hand, we establish the convexity of the SICD optimization problem and\npropose an algorithm to find its optimal solution. Our numerical results\ndemonstrate the importance of using successive interference cancellation in\nWPCNs with NOMA, and show how the energy should be distributed as a function of\nthe system parameters.\n