Abstract
In this letter, we investigate the energy efficiency (EE) problem in a millimeter wave massive MIMO system with non-orthogonal multiple access (NOMA). Multiple two-user clusters are formulated according to their channel correlation and gain difference. Following this, we propose a hybrid analog/digital precoding scheme for the low radio frequency chains structure at the base station. On this basis, we formulate a power allocation problem aiming to maximize the EE under users' quality of service requirements and per-cluster power constraint. An iterative algorithm is proposed to obtain the optimal power allocation. Simulation results show that the proposed NOMA scheme achieves superior EE performance than conventional OMA scheme.
| Original language | English |
|---|---|
| Pages (from-to) | 782-785 |
| Number of pages | 4 |
| Journal | IEEE Wireless Communications Letters |
| Volume | 6 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Dec 2017 |
| Externally published | Yes |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Free Keywords
- Energy efficiency
- Hybrid precoding
- Massive MIMO
- Millimeter wave
- NOMA
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering
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