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• W4285202959 abstract "In this paper we revisit the long standing problem of peak-to-average power ratio minimization in MIMO-OFDM systems, with a new angle of approach on a well-known scheme. Utilizing the principles of tone reservation, we place dummy symbols, i.e., complex coefficients, on unused space-frequency resources with the aim to jointly minimize the transmit signal PAPR and the self-power consumption of the dummy symbols. This joint minimization is solved using three different proposed algorithms exhibiting varying degrees of computational complexity and PAPR reduction performance. Our proposed framework utilizes the strict PAPR expression, i.e., we take into account the average transmit power of the antenna, to simultaneously reduce the PAPR on all antennas while keeping the self-power consumption of the scheme minimal. Our simulation results show that this optimization objective provides better worst-case PAPR reduction and dummy symbol power consumption performance compared to the peak power minimization objective widely utilized in the tone reservation literature. Finally, we propose a novel take on a well-known block-diagonalization algorithm by exploiting knowledge on dummy symbol allocations, resulting in high-gain data streams in downlink transmission." @default.
• W4285202959 created "2022-07-14" @default.
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• W4285202959 date "2022-01-01" @default.
• W4285202959 modified "2023-09-26" @default.
• W4285202959 title "PAPR Reduction in MIMO-OFDM via Power Efficient Transmit Waveform Shaping" @default.
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• W4285202959 doi "https://doi.org/10.1109/access.2022.3172325" @default.
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