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» Spectral Techniques for Expander Codes
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ICIP
2001
IEEE
16 years 19 days ago
Hierarchical watermarking depending on local constraints
In this paper we propose a new watermarking technique where the watermark is embedded according to two keys. The first key is used to embed a code bit in a block of pixels. The se...
Christopher D. Coltman, Adrian G. Bors
VLSISP
2002
83views more  VLSISP 2002»
14 years 10 months ago
Modulation and Coding for Noncoherent Communications
Until recently, the theory of noncoherent communications was premised on the use of orthogonal multi-pulse modulation such as frequency shift keying. The main drawback of this modu...
Michael L. McCloud, Mahesh K. Varanasi
EJWCN
2010
97views more  EJWCN 2010»
14 years 6 months ago
Analysis and Construction of Full-Diversity Joint Network-LDPC Codes for Cooperative Communications
Abstract--Transmit diversity is necessary in harsh environments to reduce the required transmit power for achieving a given error performance at a certain transmission rate. In net...
Dieter Duyck, Daniele Capirone, Joseph Jean Boutro...
EJASMP
2010
114views more  EJASMP 2010»
14 years 6 months ago
Wide-Band Audio Coding Based on Frequency-Domain Linear Prediction
In this paper, we re-visit an original concept of speech coding in which the signal is separated into the carrier modulated by the signal envelope. A recently developed technique, ...
Petr Motlícek, Sriram Ganapathy, Hynek Herm...
MLMI
2007
Springer
15 years 5 months ago
Frequency Domain Linear Prediction for QMF Sub-bands and Applications to Audio Coding
Abstract. This paper proposes an analysis technique for wide-band audio applications based on the predictability of the temporal evolution of Quadrature Mirror Filter (QMF) sub-ban...
Petr Motlícek, Sriram Ganapathy, Hynek Herm...