Abstract
A time domain synchronous orthogonal frequency division multiplexing (TDS-OFDM) scheme with dual Pseudo noise (PN) sequence is proposed for underwater acoustic (UWA) communication. Instead of using cyclic prefix (CP) or zero padding (ZP) as the guard interval, the proposed TDS-OFDM scheme uses two identical PN sequences as guard interval and utilizes them for frame synchronization and channel estimation. the proposed TDS-OFDM increases the spectrum efficiency over the conventional CP or ZP OFDM systems where additional pilots have to be inserted for channel estimation. with the dual PN at each frame header, compressed sensing channel estimation is adopted, and a rather simple equalization design reduces the receiver complexity. with a low-density parity-check (LDPC) code, the proposed system is simulated in doubly selective underwater acoustic channels with long multipath delay spread and severe Doppler spread. the results show that the TDS-OFDM achieves slightly better BER performance and higher spectrum efficiency than the conventional ZP-OFDM. © 2012 IEEE.
Recommended Citation
J. Hao et al., "Dual PN Padding TDS-OFDM for Underwater Acoustic Communication," OCEANS 2012 MTS/IEEE: Harnessing the Power of the Ocean, article no. 6404998, Institute of Electrical and Electronics Engineers, Dec 2012.
The definitive version is available at https://doi.org/10.1109/OCEANS.2012.6404998
Department(s)
Electrical and Computer Engineering
International Standard Book Number (ISBN)
978-146730829-8
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
01 Dec 2012
