Base Station-Driven PAPR Reduction Method Utilizing Null Space for MIMO-OFDM Systems With Amplify-and-Forward Relaying
Asuka Kakehashi,
Takanori Hara,
Kenichi Higuchi
Abstract:This paper proposes a peak-to-average power ratio (PAPR) reduction method that utilizes the null space in a multiple-input multiple-output (MIMO) channel for downlink MIMO-orthogonal frequency division multiplexing (OFDM) signals with multiple-antenna amplify-and-forward (AF)-type relaying. In order to achieve sufficient coverage enhancement using beamforming with multiple antennas and relaying, the PAPR not only at the base station (BS) but also at the relay station (RS) should be reduced to suppress the amou… Show more
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