Title :
LDPC code design for the BPSK-constrained Gaussian wiretap channel
Author :
Wong, Chan Wong ; Wong, Tan F. ; Shea, John M.
Author_Institution :
Wireless Inf. Networking Group, Univ. of Florida, Gainesville, FL, USA
Abstract :
A coding scheme based on irregular low-density parity-check (LDPC) codes is proposed to send secret messages from a source over the Gaussian wiretap channel to a destination in the presence of a wiretapper, with the restriction that the source can send only binary phase-shift-keyed (BPSK) symbols. The secrecy performance of the proposed coding scheme is measured by the secret message rate through the wiretap channel as well as the equivocation rate about the message at the wiretapper. A code search procedure is suggested to obtain irregular LDPC codes that achieve good secrecy performance in such context.
Keywords :
Gaussian channels; parity check codes; phase shift keying; BPSK-constrained Gaussian wiretap channel; LDPC code; binary phase-shift-keyed symbols; low-density parity-check codes; Binary phase shift keying; Decoding; Encoding; Error probability; Parity check codes; Security; Zinc;
Conference_Titel :
GLOBECOM Workshops (GC Wkshps), 2011 IEEE
Conference_Location :
Houston, TX
Print_ISBN :
978-1-4673-0039-1
Electronic_ISBN :
978-1-4673-0038-4
DOI :
10.1109/GLOCOMW.2011.6162586
