TY - GEN
T1 - A high-efficiency loop delay estimator in digital predistortion subsystem
AU - Zhu, Shitao
AU - Zhang, Anxue
AU - Xu, Zhuo
AU - Dong, Xiaoli
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/9/3
Y1 - 2014/9/3
N2 - A high-efficiency time delay estimation method is presented to obtain the accurate loop delay (including integer and fractional loop delay) between the input signal and the time delayed feedback signal in digital predistortion subsystem within the same process. Compared with the conventional, a sampling position adjusting scheme for complex signals using the piecewise-parabolic filter assisted by a steady decision criterion for limited data length achieves a significant reduction in time complexity and an improvement in loop delay estimation stability and precision. Results from simulations and experiments show that the proposed method is high-efficiency and valid.
AB - A high-efficiency time delay estimation method is presented to obtain the accurate loop delay (including integer and fractional loop delay) between the input signal and the time delayed feedback signal in digital predistortion subsystem within the same process. Compared with the conventional, a sampling position adjusting scheme for complex signals using the piecewise-parabolic filter assisted by a steady decision criterion for limited data length achieves a significant reduction in time complexity and an improvement in loop delay estimation stability and precision. Results from simulations and experiments show that the proposed method is high-efficiency and valid.
KW - Time delay estimation
KW - digital predistortion subsystem
KW - piecewise-parabolic filter
UR - https://www.scopus.com/pages/publications/84929431278
U2 - 10.1109/ChinaSIP.2014.6889307
DO - 10.1109/ChinaSIP.2014.6889307
M3 - 会议稿件
AN - SCOPUS:84929431278
T3 - 2014 IEEE China Summit and International Conference on Signal and Information Processing, IEEE ChinaSIP 2014 - Proceedings
SP - 568
EP - 571
BT - 2014 IEEE China Summit and International Conference on Signal and Information Processing, IEEE ChinaSIP 2014 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2nd IEEE China Summit and International Conference on Signal and Information Processing, IEEE ChinaSIP 2014
Y2 - 9 July 2014 through 13 July 2014
ER -