Adjustable PAPR reduction for DFT-s-OFDM via improved general precoding scheme

作者：Cho L^*; Liao H C; Hsu C Y

来源：Electronics Letters, 2018, 54(14): 903-904.

DOI：10.1049/el.2018.0743

• precoding
• Long Term Evolution
• MIMO communication
• discrete Fourier transforms
• computational complexity
• OFDM modulation
• adjustable PAPR reduction
• DFT
• improved general precoding scheme
• improved specification-compatible general precoding scheme
• peak-to-average power ratio reduction
• discrete Fourier
• orthogonal frequency division
• periodic padding
• precoded data symbols
• GPC precoding matrix
• original GPC

An improved and specification-compatible general precoding scheme (GPC) for adjustable peak-to-average power ratio (PAPR) reduction in discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) is proposed. Through the rearrangement of periodic padding for precoded data symbols in the GPC precoding matrix, the proposed algorithm does not increase any computational complexity compared to the original GPC. The LTE-based simulation shows the proposed algorithm has a better improvement of PAPR reduction especially in low-order modulations and the performances can be scaled to the other transmission bandwidth. These works contribute to the flexibility of DFT-s-OFDM for supporting 5G transmission over miscellaneous power amplifiers.

• 出版日期2018-7-12