Partial Fractional Fourier Transform (PFrFT)-MIMO-OFDM for Known Underwater Acoustic Communication Channels

Autor:	Yixin Chen, Carmine Clemente, John J. Soraghan
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	multiple input multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) partial fractional Fourier transform (PFrFT) banded minimum mean square error (BMMSE) Information technology T58.5-58.64
Zdroj:	Information, Vol 12, Iss 11, p 469 (2021)
Druh dokumentu:	article
ISSN:	12110469 2078-2489
DOI:	10.3390/info12110469
Popis:	Communication over doubly selective channels (both time and frequency selective) suffers from significant intercarrier interference (ICI). This problem is severe in underwater acoustic communications. In this paper, a novel partial fractional (PFrFT)-MIMO-OFDM system is proposed and implemented to further mitigate ICI. A new iterative band minimum mean square error (BMMSE) weight combining based on LDLH factorization is used in a scenario of perfect knowledge of channel information. The proposed method is extended from SISO-OFDM configuration to MIMO-OFDM. Simulation results demonstrate that the proposed PFrFT-LDLH outperforms the other methods in the SISO-OFDM scenario and that its performance can be improved in MIMO-OFDM scenarios.
Databáze:	Directory of Open Access Journals
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