SWIPT-Enabled Multiple Access Channel: Effects of Decoding Cost and Non-linear EH Model

Pouria Nezhadmohammad, Mohsen Abedi, Mohammad Javad Emadi, Risto Wichman

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
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Abstract

We studied power splitting-based simultaneous wireless information and power transfer (PS-SWIPT) in multiple access channels (MAC), considering the decoding cost and non-linear energy harvesting (EH) constraints at the receiving nodes to study practical limitations of an EH communication system. Under these restrictions, we formulated and analyzed the achievable rate and maximum departure regions in two well-studied scenarios, i.e., a classical PS-SWIPT MAC and a PS-SWIPT MAC with user cooperation. In the classical PS-SWIPT MAC setting, closed-form expressions for the optimal values of the PS factors are derived for two fundamental decoding schemes: simultaneous decoding and successive interference cancellation. In the PS-SWIPT MAC with user cooperation, the joint optimal power allocation for users as well as the optimal PS factor are derived. This reveals that one decoding scheme outperforms the other in the classical PS-SWIPT MAC, depending on the function type of the decoding cost. Finally, it is shown that the cooperation between users can potentially boost the performance of a PS-SWIPT MAC under decoding cost and non-linear EH constraints. Moreover, effects of the decoding cost functions, non-linear EH model and channel quality between the users are studied, and performance characteristics of the system are discussed.
Original languageEnglish
Article number9583923
Pages (from-to)306-316
Number of pages11
JournalIEEE Transactions on Communications
Volume70
Issue number1
Early online date21 Oct 2021
DOIs
Publication statusPublished - Jan 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • Decoding
  • Costs
  • Receivers
  • Wireless communication
  • Signal to noise ratio
  • Resource management
  • Integrated circuit modeling

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  • Information Harvesting

    Ilter, M.

    01/09/202031/08/2023

    Project: Academy of Finland: Other research funding

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