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Lexicographic Codebook Design for OFDM With Index Modulation
IEEE Transactions on Wireless Communications
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 fordoi:10.1109/twc.2018.2876821 fatcat:vhg5tokjq5biti6hxlhi5caihi