A discrete time continuous level VLSI architecture in current mode to implement Discrete Haar Wavelet Transform

Authors:
Ankireddypalli Subhakumar Reddy;Anindya Sundar Dhar
Affiliations:
Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India 721302;Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India 721302
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2012

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Abstract

A discrete time continuous level VLSI architecture in current mode is proposed to implement 1-D Discrete Haar Wavelet Transform (DHWT). This architecture is implemented in current mode on unquantized samples, to achieve high dynamic range that is suitable for high frequency applications. DHWT is performed on the incoming samples which are available continuously from a real-time system. In this implementation, data converters are not needed, that leads to a reduction in complexity and savings in area.