Online Transmission Policies for Cognitive Radio Networks with Energy Harvesting Secondary Users

Burak Varan, Aylin Yener

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    6 Scopus citations

    Abstract

    In this paper, we consider a cognitive radio network with energy harvesting secondary users and orthogonal channels for the primary users. Secondary users have finite capacity batteries to store harvested energy for future use. Secondary users can use the primary users' channel and transmit their data if the channel is not occupied by the primary user. We define an instantaneous reward for the secondary users which is equal to the throughput if the channel is available. Otherwise, we assign a negative reward to the secondary user as a penalty. We formulate the long term average reward maximization problem for each secondary user. We extend the fixed fraction policy in [1] to our setup and show that it yields near optimal performance. We derive an upper bound on the long term average reward, as well as additive and multiplicative lower bounds. We observe that, for energy arrivals that are frequent and when secondary users have several channel options to choose from, the secondary users are better off spending all available energy immediately, i.e., a greedy policy is a better choice whereas the fixed fraction policy is better when the energy arrivals are scarce.

    Original languageEnglish (US)
    Title of host publication2017 IEEE Wireless Communications and Networking Conference Workshops, WCNCW 2017
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781509059089
    DOIs
    StatePublished - May 3 2017
    Event2017 IEEE Wireless Communications and Networking Conference Workshops, WCNCW 2017 - San Francisco, United States
    Duration: Mar 19 2017Mar 22 2017

    Publication series

    Name2017 IEEE Wireless Communications and Networking Conference Workshops, WCNCW 2017

    Other

    Other2017 IEEE Wireless Communications and Networking Conference Workshops, WCNCW 2017
    CountryUnited States
    CitySan Francisco
    Period3/19/173/22/17

    All Science Journal Classification (ASJC) codes

    • Computer Networks and Communications
    • Signal Processing
    • Renewable Energy, Sustainability and the Environment
    • Media Technology
    • Software

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