This brief presents a low-complexity, reconfigurable architecture for the Discrete Cosine Transform (DCT) of type V (DCT-V) of length 32. The proposed architecture can be reconfigured to compute five DCT-V of length 4 with negligible area overhead. As the DCT-V is one of the odd type transforms employed in the Adaptive Multiple Transform (AMT) scheme, the effect of fixed point implementation has been assessed in the Joint Exploration Model (JEM) developed by the JVET group for the Versatile-Video-Coding (VVC) forthcoming standard. Simulation results show that the proposed architecture is not only low-complexity and reconfigurable, but features also imperceptible quality loss. Moreover, when implemented in 90 nm CMOS technology it occupies only 90k eq. gates running at 187 MHz.

Low-Complexity Reconfigurable DCT-V Architecture / Kello, Jurgen; Roch, Massimo Ruo; Masera, Guido; Martina, Maurizio. - In: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS. II, EXPRESS BRIEFS. - ISSN 1549-7747. - STAMPA. - 67:12(2020), pp. 3417-3421. [10.1109/TCSII.2020.2998604]

Low-Complexity Reconfigurable DCT-V Architecture

Roch, Massimo Ruo;Masera, Guido;Martina, Maurizio
2020

Abstract

This brief presents a low-complexity, reconfigurable architecture for the Discrete Cosine Transform (DCT) of type V (DCT-V) of length 32. The proposed architecture can be reconfigured to compute five DCT-V of length 4 with negligible area overhead. As the DCT-V is one of the odd type transforms employed in the Adaptive Multiple Transform (AMT) scheme, the effect of fixed point implementation has been assessed in the Joint Exploration Model (JEM) developed by the JVET group for the Versatile-Video-Coding (VVC) forthcoming standard. Simulation results show that the proposed architecture is not only low-complexity and reconfigurable, but features also imperceptible quality loss. Moreover, when implemented in 90 nm CMOS technology it occupies only 90k eq. gates running at 187 MHz.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2853948