TY - GEN
T1 - Iterative Receiver for Power-Domain NOMA with Mixed Waveforms
AU - Sigmund, Martin
AU - Bomfin, Roberto
AU - Chafii, Marwa
AU - Nimr, Ahmad
AU - Fettweis, Gerhard
N1 - Funding Information:
ACKNOWLEDGMENT This project has received funding from the European Union’s Horizon 2020 research and innovation programme through the project iNGENIOUS under grant agreement No. 957216.
Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Power-domain non-orthogonal multiple access (NOMA) is a promising radio access technique with non-orthogonal resource allocation that provides a greater spectrum efficiency than the conventional orthogonal multiple access (OMA). In this paper, an iterative receiver is derived for NOMA. It is based on soft-information successive interference cancellation (SIC) combined with a minimum mean square error parallel interference cancellation (MMSE-PIC) detector. Orthogonal frequency division multiplexing (OFDM) is usually the typical waveform employed. However, with the proposed receiver design, any linear modulation can be used. In addition to OFDM, single-carrier (SC) and the recently proposed sparse Walsh-Hadamard (SWH) are investigated. The NOMA scheme is analysed in a multi-path fading channel, where two users have different power ratios and waveforms. Simulation results show that mixing OFDM and SWH for a two-user NOMA gives the best performance with low receiver complexity.
AB - Power-domain non-orthogonal multiple access (NOMA) is a promising radio access technique with non-orthogonal resource allocation that provides a greater spectrum efficiency than the conventional orthogonal multiple access (OMA). In this paper, an iterative receiver is derived for NOMA. It is based on soft-information successive interference cancellation (SIC) combined with a minimum mean square error parallel interference cancellation (MMSE-PIC) detector. Orthogonal frequency division multiplexing (OFDM) is usually the typical waveform employed. However, with the proposed receiver design, any linear modulation can be used. In addition to OFDM, single-carrier (SC) and the recently proposed sparse Walsh-Hadamard (SWH) are investigated. The NOMA scheme is analysed in a multi-path fading channel, where two users have different power ratios and waveforms. Simulation results show that mixing OFDM and SWH for a two-user NOMA gives the best performance with low receiver complexity.
KW - iterative receiver
KW - power-domain non-orthogonal multiple access (NOMA)
KW - successive interference cancellation (SIC)
KW - waveforms
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U2 - 10.1109/WCNC51071.2022.9771625
DO - 10.1109/WCNC51071.2022.9771625
M3 - Conference contribution
AN - SCOPUS:85130705923
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 602
EP - 607
BT - 2022 IEEE Wireless Communications and Networking Conference, WCNC 2022
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE Wireless Communications and Networking Conference, WCNC 2022
Y2 - 10 April 2022 through 13 April 2022
ER -