Block Phase Tracking Reference Signal (PTRS) Allocation for DFT-s-OFDM

TL;DR

This paper proposes a novel block PTRS allocation method for DFT-s-OFDM systems that improves phase noise tracking and mitigation through multiresolution time-frequency tiling and a specialized modulation scheme.

Contribution

It introduces a new block PTRS allocation approach and a dedicated modulation/demodulation scheme for enhanced phase noise compensation in DFT-s-OFDM.

Findings

Improved phase noise resilience demonstrated.

Enhanced sampling efficiency via multiresolution tiling.

Effective phase noise correction achieved.

Abstract

This study introduces a Block Phase Tracking Reference Signal (PTRS) allocation approach for Discrete Fourier Transform-spread-Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) systems to enhance phase noise tracking and compensation. Our proposed block allocation methodology leverages the concepts of multiresolution time-frequency tiling for more effective sampling, thereby mitigating aliasing effects and improving phase noise resilience. A key contribution of our approach is a novel modulation and demodulation scheme, incorporating a dedicated DFT-s-OFDM symbol, a modulator branch for block PTRS generation, and a dedicated demodulator for accurate phase noise estimation and correction.