Abstract
Millimeter wave (mmWave) massive multiple-input-multiple-output (mMIMO) is a key technology for high capacity mobile communications. The straightforward implementation of mMIMO with fully digital precoding (FDP) and high resolution digital-to-analog converters (DACs) ends up with poor energy efficiency (EE) at the transmitter. Use of 1-bit DACs is a promising approach to improve the EE, since the power amplifiers (PAs) are driven with the maximum efficiency when they are fed with constant envelope (CE) signals. In this paper, we evaluate spectral efficiency (SE) and EE performances of FDP and hybrid precoding (HP) in mmWave mMIMO downlink to identify the more compatible option with the 1-bit quantization. Numerical results illustrate that FDP in general achieves higher SE and has higher EE at high signal-to-noise ratio (SNR), whereas HP has higher EE and achieves higher maximum EE at low SNR.
| Original language | English |
|---|---|
| Title of host publication | 2023 IEEE 97th Vehicular Technology Conference, VTC 2023-Spring - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9798350311143 |
| DOIs | |
| State | Published - 2023 |
| Event | 97th IEEE Vehicular Technology Conference, VTC 2023-Spring - Florence, Italy Duration: 20 Jun 2023 → 23 Jun 2023 |
Publication series
| Name | IEEE Vehicular Technology Conference |
|---|---|
| Volume | 2023-June |
| ISSN (Print) | 1550-2252 |
Conference
| Conference | 97th IEEE Vehicular Technology Conference, VTC 2023-Spring |
|---|---|
| Country/Territory | Italy |
| City | Florence |
| Period | 20/06/23 → 23/06/23 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- 1-bit DAC
- downlink
- energy-efficiency
- massive MIMO
- mmWave
- power amplifier
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