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• W2900237763 abstract "In this paper, we propose a novel codebook design scheme for orthogonal frequency-division multiplexing with index modulation (OFDM-IM) to improve system performance. The optimization process can be implemented efficiently by the lexicographic ordering principle. By applying the proposed codebook design, all subcarrier activation patterns with a fixed number of active subcarriers will be explored. Furthermore, as the number of active subcarriers is fixed, the computational complexity for estimation at the receiver is reduced and the zero-active subcarrier dilemma is solved without involving complex higher layer transmission protocols. It is found that the codebook design can potentially provide a tradeoff between diversity and transmission rate. We investigate the diversity mechanism and formulate three diversity-rate optimization problems for the proposed OFDM-IM system. Based on the genetic algorithm, the method of solving these formulated optimization problems is provided and verified to be effective. Then, we analyze the average block error rate and bit error rate of the OFDM-IM systems applying the codebook design. Finally, all analyses are numerically verified by the Monte Carlo simulations. In addition, a series of comparisons are provided, by which the superiority of the codebook design is confirmed." @default.
• W2900237763 created "2018-11-16" @default.
• W2900237763 creator A5001680231 @default.
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• W2900237763 date "2018-12-01" @default.
• W2900237763 modified "2023-10-16" @default.
• W2900237763 title "Lexicographic Codebook Design for OFDM With Index Modulation" @default.
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• W2900237763 doi "https://doi.org/10.1109/twc.2018.2876821" @default.
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