TY - GEN
T1 - Cooperative Successive Interference Cancellation for NOMA in Downlink Cellular Networks
AU - Zamora, Camilo Andres
AU - Mezquida, Karen
AU - Combariza, German
AU - Jaramillo-Ramirez, Daniel
AU - Kountouris, Marios
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021/6
Y1 - 2021/6
N2 - A new cooperative interference harnessing technique is proposed for non-orthogonal multiple access (NOMA) aided downlink multicell networks. The technique, coined as cooperative successive interference cancellation (Coop-SIC), leverages on the optimality conditions for SIC in the multiple access channel (MAC) seen at the receiver side without superposition coding at the transmitter. We derive SIC gain conditions that determine when is beneficial to reduce one user's rate in order to enable SIC in another user potentially increasing its rate and maximize the sum-rate. The sum-rate maximization problem in multicell downlink systems is formulated and an algorithm to find the optimal solution is provided. Our simulation results show that our Coop-SIC technique is employed up to 80% of the iterations, providing up to 40% gains in the network's spectral efficiency.
AB - A new cooperative interference harnessing technique is proposed for non-orthogonal multiple access (NOMA) aided downlink multicell networks. The technique, coined as cooperative successive interference cancellation (Coop-SIC), leverages on the optimality conditions for SIC in the multiple access channel (MAC) seen at the receiver side without superposition coding at the transmitter. We derive SIC gain conditions that determine when is beneficial to reduce one user's rate in order to enable SIC in another user potentially increasing its rate and maximize the sum-rate. The sum-rate maximization problem in multicell downlink systems is formulated and an algorithm to find the optimal solution is provided. Our simulation results show that our Coop-SIC technique is employed up to 80% of the iterations, providing up to 40% gains in the network's spectral efficiency.
KW - Cooperative cellular networks
KW - NOMA
KW - SIC
KW - multicell downlink systems
UR - http://www.scopus.com/inward/record.url?scp=85115712175&partnerID=8YFLogxK
U2 - 10.1109/ICC42927.2021.9500423
DO - 10.1109/ICC42927.2021.9500423
M3 - Conference contribution
AN - SCOPUS:85115712175
T3 - IEEE International Conference on Communications
BT - ICC 2021 - IEEE International Conference on Communications, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE International Conference on Communications, ICC 2021
Y2 - 14 June 2021 through 23 June 2021
ER -