TY - GEN
T1 - A Low-Complexity Orthogonal Matching Pursuit Algorithm Based on Multi-Scale Multi-Lag Underwater Acoustic Channels
AU - Du, Jiaqi
AU - Yan, Yongsheng
AU - Li, Xiangxiang
N1 - Publisher Copyright:
© 2024 IEEE.
PY - 2024
Y1 - 2024
N2 - This paper studies the estimation of parameter for wideband underwater acoustic (UWA) channel with multi-scale and multi-lag (MSML) characteristics, within the framework of the OFDM system. Based on the Orthogonal Matching Pursuit (OMP) reconstruction model, the high computational complexity issue caused by over-parameterized dictionaries during channel estimation is addressed. A low-complexity OMP algorithm based on independent stepwise search is proposed. This algorithm leverages the MSML characteristics of UW A channels to concentrates the computation cost waste problem of inner in critical regions, thereby solving the computational waste problem of the OMP algorithm, which requires repeated inner product calculations in each iteration. This provides a low-complexity, high-performance channel estimation solution for underwater OFDM communication.
AB - This paper studies the estimation of parameter for wideband underwater acoustic (UWA) channel with multi-scale and multi-lag (MSML) characteristics, within the framework of the OFDM system. Based on the Orthogonal Matching Pursuit (OMP) reconstruction model, the high computational complexity issue caused by over-parameterized dictionaries during channel estimation is addressed. A low-complexity OMP algorithm based on independent stepwise search is proposed. This algorithm leverages the MSML characteristics of UW A channels to concentrates the computation cost waste problem of inner in critical regions, thereby solving the computational waste problem of the OMP algorithm, which requires repeated inner product calculations in each iteration. This provides a low-complexity, high-performance channel estimation solution for underwater OFDM communication.
KW - Channel estimation
KW - Low complexity
KW - Multi-scale and Multi-lag
KW - Orthogonal Matching Pursuit
UR - http://www.scopus.com/inward/record.url?scp=85214893132&partnerID=8YFLogxK
U2 - 10.1109/ICSPCC62635.2024.10770462
DO - 10.1109/ICSPCC62635.2024.10770462
M3 - 会议稿件
AN - SCOPUS:85214893132
T3 - 2024 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2024
BT - 2024 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2024
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2024
Y2 - 19 August 2024 through 22 August 2024
ER -