Abstract
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.
Original language | English |
---|---|
Article number | 469 |
Number of pages | 14 |
Journal | Information |
Volume | 12 |
Issue number | 11 |
DOIs | |
Publication status | Published - 12 Nov 2021 |
Keywords
- multiple input multiple output (MIMO)
- orthogonal frequency division multiplexing (OFDM)
- partial fractional Fourier transform (PFrFT)
- banded minimum mean square error (BMMSE)