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arXiv · 2308.05367

Analysis and Compensation of Carrier Frequency Offset Impairments in Unique Word OFDM

Christian Hofbauer·Werner Haselmayr·Hans-Peter Bernhard·Mario Huemer
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Abstract

Unique Word-orthogonal frequency division multiplexing (UW-OFDM) is known to provide various performance benefits over conventional cyclic prefix (CP) based OFDM. Most important, UW-OFDM features excellent spectral sidelobe suppression properties and an outstanding bit error ratio (BER) performance. Carrier frequency offset (CFO) induced impairments denote a challenging task for OFDM systems of any kind. In this work we investigate the CFO effects on UW-OFDM and compare it to conventional multi-carrier and single-carrier systems. Different CFO compensation approaches with different computational complexity are considered throughout this work and assessed against each other. A mean squared error analysis carried out after data estimation reveals a significant higher robustness of UW-OFDM over CP-OFDM against CFO effects. Additionally, the conducted BER simulations generally support this conclusion for various scenarios, ranging from uncoded to coded transmission in a frequency selective environment.

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Christian Hofbauer, Werner Haselmayr, Hans-Peter Bernhard, Mario Huemer. 2023-08-10. Analysis and Compensation of Carrier Frequency Offset Impairments in Unique Word OFDM. https://arxiv.org/abs/2308.05367

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