Power allocation for multipair massive MIMO FD relay systems with low resolution ADCs
A4 Artikkeli konferenssijulkaisussa
ISWCS 2019 - 16th International Symposium on Wireless Communication Systems, International Symposium on Wireless Communication Systems
AbstractTo 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.
Decode-and-forward, Energy efficiency, Finite code word length, Full-duplex relaying, Low resolution ADCs, Massive MIMO, Power allocation
Tang , M , Vehkapera , M , Chu , X & Wichman , R 2019 , Power allocation for multipair massive MIMO FD relay systems with low resolution ADCs . in ISWCS 2019 - 16th International Symposium on Wireless Communication Systems . , 8877176 , International Symposium on Wireless Communication Systems , IEEE , pp. 505-510 , International Symposium on Wireless Communication Systems , Oulu , Finland , 27/08/2019 . https://doi.org/10.1109/ISWCS.2019.8877176