Waveform Design for High-Order QAM Faster-Than-Nyquist Transmission in the Presence of Phase Noise

Wen, Shuangchun; Liu, Guanghui; Liua, Chengxiang; Qu, Huiyang; Tian, Miao; Chen, Yan

doi:10.1109/twc.2021.3093296

Cited by 7 publications

(1 citation statement)

References 44 publications

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“…Basic ideas of incorporating FTN signaling in OFDM-based waveforms are introduced in [18]. FTN also exhibits high compatibility with different modulations, where [19] validates the capacity and SNR gain of FTN-based low-order modulations, and [20] proves the power gains of FTN-based high-order modulations in a multi-carrier system. As for the receiving technology of FTN, Ref.…”

Section: Introductionmentioning

confidence: 89%

Enhancing PAPR and Throughput for DFT-s-OFDM System Using FTN and IOTA Filtering

Zhuo

Pan

Wang

et al. 2022

Sensors

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High frequency wireless communication aims to provide ultra high-speed transmissions for various application scenarios. The waveform design for high frequency communication is challenging due to the requirements for high spectrum efficiency, as well as good hardware compatibility. With high flexibility and low peak-to-average power ratio (PAPR), discrete Fourier transformation spreading-based orthogonal frequency division multiplexing (DFT-s-OFDM) can be a promising candidate waveform. To further enhance the spectral efficiency, we integrate faster-than-Nyquist (FTN) signaling in DFT-s-OFDM, and find that the PAPR performance can also be improved. While FTN can introduce increased inter-symbol interference (ISI), in this paper, we deploy an isotropic orthogonal transform algorithm (IOTA) filter for FTN-enhanced DFT-s-OFDM, where the compact time-frequency structure of the IOTA filter can significantly reduce the ISI. Simulation results show that the proposed waveform is capable of achieving good performance in PAPR, bit error rate (BER) and throughput, simultaneously, with 3.5 dB gain in PAPR and 50% gain in throughput.

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Section: Introductionmentioning

confidence: 89%