Tushar K. Adhikary

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This paper presents a low-complexity algorithm to remove quantization effects in low bit rate video coding, such as blocking artifacts and ringing noise. The postprocessing algorithms presented in literature and MPEG-4 standard are of high computational complexity and apply low pass filtering twice to remove the two quantization effects mentioned above. The(More)
Multicarrier modulation (MCM) methods have been attracting considerable attention lately. In this paper, we address MCM techniques based on wavelet packets for QAM (quadrature amplitude modulation) and PM (phase modulation) symbol constellations. We first discuss the design of complex wavelet packets, which serve as orthonormal carriers for MCM, and then(More)
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