TY - GEN
T1 - Implementation of Predistorter for HPA Nonlinearity Mitigation on OQAM FBMC System
AU - Prasetyo, Sofyan
AU - Suryani, Titiek
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Using Cyclic Prefix (CP) and rectangular filter in orthogonal frequency division multiplexing (OFDM) system causes losing spectral efficiency, high OOB(Out-of-Band) emission, and high PAPR which leads to performance degradation. A new multicarrier modulation technique called filter bank multicarrier (FBMC), considered as a potential candidate for 5G. Due to the pulse shaping filter and no CP used, FBMC has low OOB emission, Low PAPR, and also better spectral efficiency compared to OFDM. FBMC with offset quadrature amplitude modulation (OQAM) offers better spectral efficiency than the other variant of FBMC. FBMC-OQAM only transmitted real-valued to keep real orthogonality condition, but it leads to intrinsic interference caused by imaginary part. Intrinsic interference leads to performance degradation, moreover the presence of nonlinear distortion by nonlinear High Power Amplifier (HPA). In this paper, we proposed a predistortion technique to compensate for the nonlinear distortion effect. The simulation result that using a predistorter can improve the BER performance of 12dB on the HPA OFDM-4QAM nonlinear system and 18dB on the HPA FBMC-40QAM nonlinear system for IBO=-8.5dB.
AB - Using Cyclic Prefix (CP) and rectangular filter in orthogonal frequency division multiplexing (OFDM) system causes losing spectral efficiency, high OOB(Out-of-Band) emission, and high PAPR which leads to performance degradation. A new multicarrier modulation technique called filter bank multicarrier (FBMC), considered as a potential candidate for 5G. Due to the pulse shaping filter and no CP used, FBMC has low OOB emission, Low PAPR, and also better spectral efficiency compared to OFDM. FBMC with offset quadrature amplitude modulation (OQAM) offers better spectral efficiency than the other variant of FBMC. FBMC-OQAM only transmitted real-valued to keep real orthogonality condition, but it leads to intrinsic interference caused by imaginary part. Intrinsic interference leads to performance degradation, moreover the presence of nonlinear distortion by nonlinear High Power Amplifier (HPA). In this paper, we proposed a predistortion technique to compensate for the nonlinear distortion effect. The simulation result that using a predistorter can improve the BER performance of 12dB on the HPA OFDM-4QAM nonlinear system and 18dB on the HPA FBMC-40QAM nonlinear system for IBO=-8.5dB.
KW - FBMC
KW - Intrinsic Interference
KW - Nonlinear distortion
KW - OQAM
KW - Predistorter
UR - http://www.scopus.com/inward/record.url?scp=85127624141&partnerID=8YFLogxK
U2 - 10.1109/CCWC54503.2022.9720842
DO - 10.1109/CCWC54503.2022.9720842
M3 - Conference contribution
AN - SCOPUS:85127624141
T3 - 2022 IEEE 12th Annual Computing and Communication Workshop and Conference, CCWC 2022
SP - 1036
EP - 1042
BT - 2022 IEEE 12th Annual Computing and Communication Workshop and Conference, CCWC 2022
A2 - Paul, Rajashree
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 12th IEEE Annual Computing and Communication Workshop and Conference, CCWC 2022
Y2 - 26 January 2022 through 29 January 2022
ER -