Abstract
Future wireless multiple-input multiple-output
(MIMO) communication systems will employ sub-6 GHz and
millimeter wave (mmWave) frequency bands working cooper-
atively. 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 es-
timate mmWave MIMO channels using out-of-band information
obtained from the sub-6 GHz 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.
(MIMO) communication systems will employ sub-6 GHz and
millimeter wave (mmWave) frequency bands working cooper-
atively. 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 es-
timate mmWave MIMO channels using out-of-band information
obtained from the sub-6 GHz 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.
| Original language | English |
|---|---|
| Title of host publication | 2024 International Conference on Smart Applications, Communications and Networking, SmartNets 2024 |
| Number of pages | 6 |
| ISBN (Electronic) | 979-8-3503-8532-8 |
| DOIs | |
| Publication status | Published - 1 May 2024 |
| Event | 2024 International Conference on Smart Applications, Communications and Networking (SmartNets) - Harrisonburg, Virginia, United States Duration: 28 May 2024 → 30 May 2024 |
Conference
| Conference | 2024 International Conference on Smart Applications, Communications and Networking (SmartNets) |
|---|---|
| Country/Territory | United States |
| City | Virginia |
| Period | 28/05/24 → 30/05/24 |
Research Field
- Enabling Digital Technologies
Keywords
- channel estimation
- mmWave
- sub-6 GHz
- 6G
- out-of-band information
- beamforming
