Title :
Soft-input soft-output linear programming decoding for spread spectrum underwater acoustic communications
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA
Abstract :
This paper presents the soft-input soft-output (SISO) linear programming (LP) decoder. It is shown that the soft information gleaned from a pseudo-codeword solution to the LP optimization is not only useful, but that it can be used to form a superior channel estimate compared to the output from a SISO belief propagation (BP) decoder in certain situations.
Keywords :
channel coding; channel estimation; decoding; linear codes; linear programming; spread spectrum communication; underwater acoustic communication; LP optimization; SISO belief propagation decoder; SISO-BP decoder; SISO-LP decoder; channel estimation; pseudocodeword solution; soft-input soft-output linear programming decoding; spread spectrum underwater acoustic communications; Channel estimation; Decoding; Iterative decoding; Linear programming; Receivers; Underwater acoustics; LP decoding; short block length codes; stealthy communications; underwater communications;
Conference_Titel :
Signals, Systems and Computers, 2013 Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4799-2388-5
DOI :
10.1109/ACSSC.2013.6810498
