TY - GEN
T1 - 6G FR3 Band-limited Based DPD using Low-Resolution Σ Feedback Receiver
AU - Zeng, Haoyang
AU - Ghoniem, Ahmed A.
AU - Pham, Dang Kièn Germain
AU - Vasilevski, Michel
AU - Mohellebi, Reda
AU - Aboushady, Hassan
AU - Jabbour, Chadi
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025/1/1
Y1 - 2025/1/1
N2 - This paper presents the integration of a band-limited memory polynomial (BL-MP) digital pre-distortion (DPD) model with low-resolution Σ-based feedback receivers, specifically targeting 6G FR3 carrier aggregation using a 400 MHz OFDM 64QAM signal. The performance is evaluated using two power amplifiers (PAs) - Doherty and Class AB - with distinct nonlinearity profiles. The study compares the Generalized Memory Polynomial (GMP) model with the BL-MP model. Significant improvements in error vector magnitude (EVM), approximately 0.7 dBm at the 3% threshold, are observed for both PAs relative to the GMP-LS model. Additionally, adjacent channel leakage ratio (ACLR) enhancements of around 7 dB are achieved, further surpassing GMP-LS performance. These findings demonstrate the adaptability and effectiveness of the BL-MP model, delivering substantial performance gains over conventional pre-distortion techniques across varied PA architectures.The results highlight the potential of employing a BL-MP DPD with a low-resolution feedback receiver, offering an optimal solution for DPD applications in 6G FR3.
AB - This paper presents the integration of a band-limited memory polynomial (BL-MP) digital pre-distortion (DPD) model with low-resolution Σ-based feedback receivers, specifically targeting 6G FR3 carrier aggregation using a 400 MHz OFDM 64QAM signal. The performance is evaluated using two power amplifiers (PAs) - Doherty and Class AB - with distinct nonlinearity profiles. The study compares the Generalized Memory Polynomial (GMP) model with the BL-MP model. Significant improvements in error vector magnitude (EVM), approximately 0.7 dBm at the 3% threshold, are observed for both PAs relative to the GMP-LS model. Additionally, adjacent channel leakage ratio (ACLR) enhancements of around 7 dB are achieved, further surpassing GMP-LS performance. These findings demonstrate the adaptability and effectiveness of the BL-MP model, delivering substantial performance gains over conventional pre-distortion techniques across varied PA architectures.The results highlight the potential of employing a BL-MP DPD with a low-resolution feedback receiver, offering an optimal solution for DPD applications in 6G FR3.
KW - 6G
KW - Band-limited Memory Polynomial
KW - Digital Predistortion
KW - FR3
KW - Low-Resolution Receivers
KW - Sigma-delta
UR - https://www.scopus.com/pages/publications/105010585200
U2 - 10.1109/ISCAS56072.2025.11043783
DO - 10.1109/ISCAS56072.2025.11043783
M3 - Conference contribution
AN - SCOPUS:105010585200
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
BT - ISCAS 2025 - IEEE International Symposium on Circuits and Systems, Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 IEEE International Symposium on Circuits and Systems, ISCAS 2025
Y2 - 25 May 2025 through 28 May 2025
ER -