TY - GEN
T1 - Evaluation of link level performance considering EVM of transmit signal for downlink NOMA
AU - Mayama, Kenta
AU - Akimoto, Kohei
AU - Kameda, Suguru
AU - Suematsu, Noriharu
N1 - Funding Information:
A part of this work is supported by JSPS KAKENHI Grant Number JP16H04361 and JP16KK0139.
Publisher Copyright:
© 2018 IEICE
PY - 2019/1/16
Y1 - 2019/1/16
N2 - In this paper, we investigate the link level performance considering the influence of the error vector magnitude (EVM) of a transmit signal in a downlink non-orthogonal multiple access (NOMA) with two users. The motivation of this work is that to clarify the impact of the distortion of the transmit signal, which is expressed as the EVM, on the reception performance of each user equipment (UE). Results show that the performance of the near-base-station UE, which implements a successive interference cancellation (SIC), is deteriorated as the EVM increases, and that the amount of the deterioration rapidly increases as the modulation level is higher. In contrast, the performance of the far-base-station UE, which does not implement the SIC, is less affected even with the large EVM. Furthermore, we also show that the downlink NOMA requires lower EVM values than the downlink orthogonal multiple access (OMA), when comparing them at the same modulation level. Accordingly, a high quality radio frequency (RF) transmitter will be required for the introduction of NOMA to the next generation mobile communication systems.
AB - In this paper, we investigate the link level performance considering the influence of the error vector magnitude (EVM) of a transmit signal in a downlink non-orthogonal multiple access (NOMA) with two users. The motivation of this work is that to clarify the impact of the distortion of the transmit signal, which is expressed as the EVM, on the reception performance of each user equipment (UE). Results show that the performance of the near-base-station UE, which implements a successive interference cancellation (SIC), is deteriorated as the EVM increases, and that the amount of the deterioration rapidly increases as the modulation level is higher. In contrast, the performance of the far-base-station UE, which does not implement the SIC, is less affected even with the large EVM. Furthermore, we also show that the downlink NOMA requires lower EVM values than the downlink orthogonal multiple access (OMA), when comparing them at the same modulation level. Accordingly, a high quality radio frequency (RF) transmitter will be required for the introduction of NOMA to the next generation mobile communication systems.
KW - Allocated power ratio
KW - EVM
KW - NOMA
KW - SIC
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U2 - 10.23919/APMC.2018.8617620
DO - 10.23919/APMC.2018.8617620
M3 - Conference contribution
AN - SCOPUS:85061768423
T3 - Asia-Pacific Microwave Conference Proceedings, APMC
SP - 774
EP - 776
BT - 2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 30th Asia-Pacific Microwave Conference, APMC 2018
Y2 - 6 November 2018 through 9 November 2018
ER -