Performance analysis of underwater digital speech communication system based on LDPC codes

Author

Han, Wei ; Huang, Jianguo ; Jiang, Min

Author_Institution

Coll. of Marine Eng., Northwestern Polytech. Univ., Xian

fYear

2009

fDate

25-27 May 2009

Firstpage

567

Lastpage

570

Abstract

To reduce error codes between the receiver and the transmitter and to achieve credible transmission performance of underwater digital speech communication system, low density parity check code (LDPC) is introduced to underwater digital speech communication system. Based on the characteristics of the system, (864,432) LDPC code with code rate 1/2, row weight 6, column weight 3 is selected. We also compare the LDPC code with Turbo code with 1/2 code rate. The experiment results show that digital speech signal transmission is reliable if signal to noise is more than 1.5 dB in the underwater digital speech communication system.

Keywords

error correction codes; parity check codes; speech coding; underwater acoustic communication; voice communication; LDPC code; error code; low density parity check code; underwater digital speech communication system; Belief propagation; Block codes; Code standards; Oral communication; Parity check codes; Performance analysis; Sparse matrices; Speech coding; Turbo codes; Underwater communication; belief propagation (BP); log likelihood ratios (LLR); low density parity check code; underwater channel;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4244-2799-4

Electronic_ISBN

978-1-4244-2800-7

Type

conf

DOI

10.1109/ICIEA.2009.5138212

Filename

5138212