Channel Estimation for mmWave MIMO using sub-6 GHz Out-of-Band Information
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866910516923858944 |
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| author | Pasic, Faruk Hofer, Markus Mussbah, Mariam Caban, Sebastian Schwarz, Stefan Zemen, Thomas Mecklenbräuker, Christoph F. |
| author_facet | Pasic, Faruk Hofer, Markus Mussbah, Mariam Caban, Sebastian Schwarz, Stefan Zemen, Thomas Mecklenbräuker, Christoph F. |
| contents | Future wireless multiple-input multiple-output (MIMO) communication systems will employ sub-6 GHz and millimeter wave (mmWave) frequency bands working cooperatively. Establishing a MIMO communication link usually relies on estimating channel state information (CSI) which is difficult to acquire at mmWave frequencies due to a low signal-to-noise ratio (SNR). In this paper, we propose three novel methods to estimate mmWave MIMO channels using out-of-band information obtained from the sub-6GHz band. We compare the proposed channel estimation methods with a conventional one utilizing only in-band information. Simulation results show that the proposed methods outperform the conventional mmWave channel estimation method in terms of achievable spectral efficiency, especially at low SNR and high K-factor. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_08996 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Channel Estimation for mmWave MIMO using sub-6 GHz Out-of-Band Information Pasic, Faruk Hofer, Markus Mussbah, Mariam Caban, Sebastian Schwarz, Stefan Zemen, Thomas Mecklenbräuker, Christoph F. Information Theory Signal Processing Future wireless multiple-input multiple-output (MIMO) communication systems will employ sub-6 GHz and millimeter wave (mmWave) frequency bands working cooperatively. Establishing a MIMO communication link usually relies on estimating channel state information (CSI) which is difficult to acquire at mmWave frequencies due to a low signal-to-noise ratio (SNR). In this paper, we propose three novel methods to estimate mmWave MIMO channels using out-of-band information obtained from the sub-6GHz band. We compare the proposed channel estimation methods with a conventional one utilizing only in-band information. Simulation results show that the proposed methods outperform the conventional mmWave channel estimation method in terms of achievable spectral efficiency, especially at low SNR and high K-factor. |
| title | Channel Estimation for mmWave MIMO using sub-6 GHz Out-of-Band Information |
| topic | Information Theory Signal Processing |
| url | https://arxiv.org/abs/2311.08996 |