Abstract: The paper proposes an active constellation modification technique to lower peak-to-average power ratio (PAPR) for orthogonal frequency division multiplexing (OFDM) signals. First, the ...

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Abstract: Orthogonal frequency division multiplexing with index modulation (OFDM-IM), which transmits information bits through ordinary constellation symbols and indices of active subcarriers, is a ...

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Unlike OFDM and OFDMA, both of which modulate information within the time-frequency domain, OTFS does so within the Delay Doppler domain Certain high mobility environments, such as high-speed trains, ...

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