Variations on Information Embedding in Multiple Access and Broadcast Channels

Information embedding (IE) is the transmission of information within a host signal subject to a distortion constraint. There are two types of embedding methods, namely irreversible IE and reversible IE, depending upon whether or not the host, as well as the message, is recovered at the decoder. In irreversible IE, only the embedded message is recovered at the decoder, and in reversible IE, both the message and the host are recovered at the decoder. This paper considers combinations of irreversible and reversible IE in multiple access channels (MAC) and physically degraded broadcast channels (BC). This paper first considers MAC IE in which separate encoders embed their messages into their host signals subject to distortion constraints. The embedded signals from the two encoders are transmitted to a single decoder across a MAC. This paper study the capacity region in three cases: A) no host recovery at the decoder, B) lossless recovery of one host at the decoder, and C) lossless recove...

• Type: Journal
• Year: 2007
• Where: CORR
• Authors: Shivaprasad Kotagiri, J. Nicholas Laneman
• Keywords: Capacity Region, CORR 2007, Decoder, Education, Reversible Ie