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- W2969396694 abstract "The non-orthogonal multiple access (NOMA) has the potential to improve the spectrum efficiency and the user connectivity compared to the orthogonal schemes. The codebook design is crucial for the the performance of the NOMA system. In this paper, we comprehensively investigate the NOMA codebook design involving the characteristics from multiple signal domains. The minimizing of the pairwise error probability is considered as the target of the optimization. The neural network framework is explored for the optimization, and the mapping functions on the edges are considered as weights. The method of batch gradient descent is applied for optimizing the weights and correspondingly the codebook. The simulation results reveal that with the optimized codebook the error performance is significantly improved compared to the schemes in the literature." @default.
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- W2969396694 date "2019-01-01" @default.
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- W2969396694 title "NOMA Codebook Optimization by Batch Gradient Descent" @default.
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- W2969396694 doi "https://doi.org/10.1109/access.2019.2936483" @default.
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