TY - JOUR
T1 - An application of 8-APSK modulation for the uplink using SVD-SCMA
AU - Vidal-Beltran, Sergio
AU - Lopez-Bonilla, Jose Luis
AU - Martinez-Pinon, Fernando
N1 - Publisher Copyright:
© 2003-2012 IEEE.
PY - 2021/10
Y1 - 2021/10
N2 - In recent years SCMA has been proposed as a strong candidate to perform as access technique for fifth-generation mobile communications systems; usually for the uplink, bit pairs are mapped directly to code words and MPA is used in the receiver. In this work, we proposed to encode three bits to increase the capacity of data transmission in the uplink using singular value decomposition of the initial mother constellation to generate the codewords. In the receiver, the detection and decoding of data is more complex than its predecessors with two bits, since the symbols in the IQ constellation are closer to each other, so a receiver based on neural networks is proposed to perform these tasks. The experimental performance of this proposal was evaluated by implementing a software defined radio platform. The results show that, even under unfavorable SNR conditions, it is possible to use 8-APSK as a modulation technique with low error rate in the detection and decoding of SCMA signals.
AB - In recent years SCMA has been proposed as a strong candidate to perform as access technique for fifth-generation mobile communications systems; usually for the uplink, bit pairs are mapped directly to code words and MPA is used in the receiver. In this work, we proposed to encode three bits to increase the capacity of data transmission in the uplink using singular value decomposition of the initial mother constellation to generate the codewords. In the receiver, the detection and decoding of data is more complex than its predecessors with two bits, since the symbols in the IQ constellation are closer to each other, so a receiver based on neural networks is proposed to perform these tasks. The experimental performance of this proposal was evaluated by implementing a software defined radio platform. The results show that, even under unfavorable SNR conditions, it is possible to use 8-APSK as a modulation technique with low error rate in the detection and decoding of SCMA signals.
KW - 5G
KW - 8APSK
KW - Neural networks
KW - SCMA
KW - Supervised Learning
UR - http://www.scopus.com/inward/record.url?scp=85112211029&partnerID=8YFLogxK
U2 - 10.1109/TLA.2021.9477276
DO - 10.1109/TLA.2021.9477276
M3 - Artículo
AN - SCOPUS:85112211029
SN - 1548-0992
VL - 19
SP - 1754
EP - 1762
JO - IEEE Latin America Transactions
JF - IEEE Latin America Transactions
IS - 10
M1 - 9477276
ER -