Abstract
To reduce energy consumption, relay stations with massive antenna arrays can be equipped with low resolution analog-to-digital converters (ADCs). Due to powerful loop interference in full-duplex (FD) relaying, however, low resolution ADCs generate strong quantization noise that has severe impact on the throughput of the system. In this paper, the throughput and energy efficiency of a FD decode-and-forward relay system with low resolution ADCs is investigated. Based on the mathematical analysis, a novel iterative power allocation scheme that mitigates the impact of the quantization noise via reducing the received LI power is proposed. The power allocation scheme aims at maximizing the end-to-end achievable rate by adjusting the per-link transmit powers at the relay. The numerical results show that compared to half-duplex relaying, using FD with the proposed power allocation scheme improves the system throughput and energy efficiency significantly.
| Original language | English |
|---|---|
| Title of host publication | 2019 16th International Symposium on Wireless Communication Systems (ISWCS) |
| Publisher | IEEE Institute of Electrical and Electronic Engineers |
| Pages | 505-510 |
| Number of pages | 6 |
| ISBN (Electronic) | 978-1-7281-2527-5 |
| ISBN (Print) | 978-1-7281-2528-2 |
| DOIs | |
| Publication status | Published - Aug 2019 |
| MoE publication type | A4 Article in a conference publication |
| Event | 16th International Symposium on Wireless Communication Systems, ISWCS 2019 - Oulu, Finland Duration: 27 Aug 2019 → 30 Aug 2019 |
Conference
| Conference | 16th International Symposium on Wireless Communication Systems, ISWCS 2019 |
|---|---|
| Country/Territory | Finland |
| City | Oulu |
| Period | 27/08/19 → 30/08/19 |
Funding
This work was supported in part by the European Unions Horizon 2020 Research and Innovation Programme under Grant 734798, and in part by the Academy of Finland under Grant 288249.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Decode-and-forward
- Energy efficiency
- Finite code word length
- Full-duplex relaying
- Low resolution ADCs
- Massive MIMO
- Power allocation
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