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Memory Architecture Exploration for Power-Efficient 2D-Discrete Wavelet Transform

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2 Author(s)
Jain, R. ; CoWare India Pvt Ltd, Noida ; Panda, P.R.

The discrete wavelet transform (DWT) forms the core of the JPEG2000 image compression algorithm. Since the JPEG2000 compression application is heavily data-intensive, the overall power dissipation is dominated by read and write operations in the memory subsystem. The proposed architecture and computation sequence, called low-power block-scan, takes into account the EBCOT (embedded block coding with optimized truncation) code block size, which reduces the intermediate buffer requirement between the DWT and EBCOT modules. The impact of different memory subsystem optimization techniques on the overall memory power for 2D-DWT computation was modeled. The proposed model explores the different data access patterns, memory bank partitioning, and custom memory architectures to arrive at a power-efficient DWT architecture

Published in:

VLSI Design, 2007. Held jointly with 6th International Conference on Embedded Systems., 20th International Conference on

Date of Conference:

Jan. 2007

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