Joint channel and Doppler estimation for OSDM underwater acoustic communications

Joint channel and Doppler estimation for OSDM underwater acoustic communications

Han, Jing (Northwestern Polytechnical University)
Chepuri, Sundeep Prabhakar (Indian Institute of Science)
Leus, G.J.T. (TU Delft Signal Processing Systems)

2020-05-01

Orthogonal signal-division multiplexing (OSDM) has recently emerged as a promising modulation scheme for underwater acoustic communications. Although providing more flexibility in system design, it suffers from a special interference structure over time-varying channels. To enable reliable OSDM equalization, we propose a joint channel impulse response and Doppler estimation algorithm in this paper. Compared to the existing method, which solves a nonconvex bilinear optimization problem iteratively in the frequency domain without a guarantee of global optimality, the proposed algorithm transforms the problem into a convex quadratic minimization in the time domain and can achieve a closed-form solution.

Channel estimation
Doppler estimation
OSDM
Time-varying channels
Underwater acoustic communications

http://resolver.tudelft.nl/uuid:9ef18d8a-6132-403c-a0c8-f2e278db6da4

https://doi.org/10.1016/j.sigpro.2019.107446

2020-11-30

0165-1684

Signal Processing, 170

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Institutional Repository

journal article

© 2020 Jing Han, Sundeep Prabhakar Chepuri, G.J.T. Leus