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Related Experiment Video

Updated: Sep 5, 2025

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

Xinran Zhuo1,2, Jianxiong Pan3, Huwei Wang3

  • 1School of Cyberspace Science and Technology, Beijing Institute of Technology, Beijing 100081, China.

Sensors (Basel, Switzerland)
|July 9, 2022
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Summary

This study enhances wireless communication by integrating Faster-Than-Nyquist (FTN) signaling with DFT-s-OFDM, improving spectral efficiency and reducing Peak-to-Average Power Ratio (PAPR). The use of an IOTA filter minimizes inter-symbol interference for better overall performance.

Keywords:
DFT-s-OFDMFTNIOTA filterPAPRhigh frequencywaveform

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Area of Science:

  • Wireless Communication
  • Signal Processing

Background:

  • High frequency wireless communication demands ultra high-speed transmissions.
  • Waveform design faces challenges in balancing spectrum efficiency and hardware compatibility.
  • Discrete Fourier Transform spreading-based Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) offers flexibility and low Peak-to-Average Power Ratio (PAPR).

Purpose of the Study:

  • To enhance spectral efficiency in DFT-s-OFDM by integrating Faster-Than-Nyquist (FTN) signaling.
  • To investigate the impact of FTN integration on PAPR performance.
  • To mitigate the inter-symbol interference (ISI) introduced by FTN signaling.

Main Methods:

  • Integration of FTN signaling into DFT-s-OFDM.
  • Deployment of an Isotropic Orthogonal Transform Algorithm (IOTA) filter to reduce ISI.
  • Performance evaluation through simulations focusing on PAPR, Bit Error Rate (BER), and throughput.

Main Results:

  • The proposed FTN-enhanced DFT-s-OFDM waveform shows improved spectral efficiency.
  • PAPR performance is enhanced compared to standard DFT-s-OFDM.
  • The IOTA filter effectively reduces ISI, leading to significant gains in PAPR (3.5 dB) and throughput (50%).

Conclusions:

  • The FTN-enhanced DFT-s-OFDM waveform with an IOTA filter is a promising candidate for high frequency wireless communication.
  • This approach simultaneously achieves good PAPR, BER, and throughput.
  • The integration offers a substantial improvement in communication system performance.