In this paper, we explore the energy efficiency (EE) and spectral efficiency (SE) tradeoff with α-fairness consideration for downlink non-orthogonal multiple access (NOMA) networks based on a multi-objective optimization problem. To acquire the Pareto optimal solution of the original optimization problem, the weighted sum method is adopted to transfer the multi- objective optimization problem to a single-objective optimization problem. The trade-off between SE and EE with fairness considered can be captured through the Pareto optimal solution. Simulation results reveal the achievable SE and EE with same α of NOMA networks outperform that of OFDMA protocol as α is small, and the NOMA networks with more multiplexed users have better performance in EE and SE of NOMA networks as the fairness level among users is higher.


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    Title :

    Energy-Spectral Efficiency Tradeoff of Downlink NOMA System with Fairness Consideration


    Contributors:
    Ni, Dadong (author) / Hao, Li (author) / Qian, Xiaomin (author) / Tran, Quang Thanh (author)


    Publication date :

    2018-06-01


    Size :

    189238 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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