TY - GEN
T1 - Nonlinear effects in NOMA signals: Performance evaluation and receiver design
AU - Guerreiro, João
AU - Dinis, Rui
AU - Montezuma, Paulo
AU - Da Silva, Mario Marques
N1 - UID/EEA/50008/2019
POCI-01-0145-FEDER-030629
SAICT-45-2017-02
Sem PDF conforme despacho.
PY - 2019/9
Y1 - 2019/9
N2 - Non-orthogonal multiple access (NOMA) is being considered a key technology for 5G systems. In this work, we consider power-domain NOMA schemes for downlink orthogonal frequency-division multiplexing (OFDM) transmissions. Moreover, we consider the use of an efficient, nonlinear power amplification. We analyze the nonlinear distortion effects associated with the power amplifier and show that the nonlinear distortion can be severe, preventing the use of conventional NOMA receivers. In that context, we propose a receiver that estimates and cancels the nonlinear distortion and enables the implementation of power-domain NOMA schemes in strongly nonlinear OFDM scenarios.
AB - Non-orthogonal multiple access (NOMA) is being considered a key technology for 5G systems. In this work, we consider power-domain NOMA schemes for downlink orthogonal frequency-division multiplexing (OFDM) transmissions. Moreover, we consider the use of an efficient, nonlinear power amplification. We analyze the nonlinear distortion effects associated with the power amplifier and show that the nonlinear distortion can be severe, preventing the use of conventional NOMA receivers. In that context, we propose a receiver that estimates and cancels the nonlinear distortion and enables the implementation of power-domain NOMA schemes in strongly nonlinear OFDM scenarios.
KW - NOMA
KW - Nonlinear distortion effects
KW - OFDM
KW - Performance evaluation
KW - Receiver design
UR - http://www.scopus.com/inward/record.url?scp=85075247281&partnerID=8YFLogxK
U2 - 10.1109/VTCFall.2019.8891070
DO - 10.1109/VTCFall.2019.8891070
M3 - Conference contribution
AN - SCOPUS:85075247281
T3 - IEEE Vehicular Technology Conference
BT - 2019 IEEE 90th Vehicular Technology Conference, VTC 2019 Fall - Proceedings
PB - Institute of Electrical and Electronics Engineers (IEEE)
T2 - 90th IEEE Vehicular Technology Conference, VTC 2019 Fall
Y2 - 22 September 2019 through 25 September 2019
ER -