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Exploiting effects of imperfect-CSI and SIC, and intercell interference on the outage performance of NOMA over \(\kappa -\mu , \alpha -\kappa -\mu\) shadowed faded channels

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Abstract

Non-orthogonal multiple access (NOMA) is very promising for the future wireless communication systems. The primary goal of this paper is to provide precise outage probability formulas for downlink-NOMA-based communication systems over non-homogeneous fading scenarios. The outage probability of NOMA is analyzed over \(\kappa -\mu , \alpha -\kappa -\mu\) faded and shadowed faded channels. Other fading channels result as special cases of this analysis. The closed-form expressions of outage probability are derived in a more realistic scenario considering the imperfect-channel state information (CSI) and successive interference cancellation, intra and inter-cellular interference. The derived expressions are very beneficial to asses the performance of NOMA with different fading parameters. We calculate the outage probability for two users in a Voronoi cell: near user and edge user. The obtained results are very promising, when compared with the simulated NOMA based wireless communication system. It is observed that the impact of imperfect-CSI on both users is the same. The effect of inter-cell interference is not a serious concern for the MSs which lie at the proximity of the BS. However, the performance of the MS which lies at the edge of the cell is degraded with the number of interferers.

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The results are done with the help of MATLAB and corresponding files are available with us. Based on the request we will share the relevant source codes.

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No funding agencies for this work. This work was carried out in the part of my Research program.

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  1. Departement of Electronics and Communication Engineering, Vignan Nirula Institute of Science and Technology for Women, Guntur, Andhra Pradesh, 522009, India

    Shaik Thaherbasha

  2. School of Electronics Engineering, VIT-AP, Vijayawada, 522237, India

    Ravindra Dhuli

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  1. Shaik Thaherbasha
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Thaherbasha, S., Dhuli, R. Exploiting effects of imperfect-CSI and SIC, and intercell interference on the outage performance of NOMA over \(\kappa -\mu , \alpha -\kappa -\mu\) shadowed faded channels. Wireless Netw 28, 3621–3637 (2022). https://doi.org/10.1007/s11276-022-03085-8

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