Analysis and Compensation of Carrier Frequency Offset Impairments in Unique Word OFDM
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arXiv
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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| _version_ | 1866915004181118976 |
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| author | Hofbauer, Christian Haselmayr, Werner Bernhard, Hans-Peter Huemer, Mario |
| author_facet | Hofbauer, Christian Haselmayr, Werner Bernhard, Hans-Peter Huemer, Mario |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2308_05367 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Analysis and Compensation of Carrier Frequency Offset Impairments in Unique Word OFDM Hofbauer, Christian Haselmayr, Werner Bernhard, Hans-Peter Huemer, Mario Signal Processing 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. |
| title | Analysis and Compensation of Carrier Frequency Offset Impairments in Unique Word OFDM |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2308.05367 |