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

© The Institution of Engineering and Technology
Received 06/03/2018, Published 31/05/2018
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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.

Inspec keywords: precoding; Long Term Evolution; computational complexity; discrete Fourier transforms; OFDM modulation; MIMO communication

Other keywords: orthogonal frequency division; peak-to-average power ratio reduction; DFT; improved specification-compatible general precoding scheme; improved general precoding scheme; periodic padding; precoded data symbols; GPC precoding matrix; discrete Fourier; adjustable PAPR reduction; original GPC

Subjects: Codes; Integral transforms; Interpolation and function approximation (numerical analysis); Other topics in statistics; Modulation and coding methods; Radio links and equipment

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