Optimization of Pipelined Discrete Wavelet Packet Transform Based on an Efficient Transpose Form and an Advanced Functional Sharing Technique

Hung-Ngoc Nguyen, Cheol-Hong Kim and Jong-Myon Kim
Volume: 15, No: 2, Page: 374 ~ 385, Year: 2019
10.3745/JIPS.01.0041
Keywords: AFS Technique, CSDBE, Daubechies, DWPT, FIR Filter, FPGA, Pipelined Architecture
Full Text:

Abstract
This paper presents an optimal implementation of a Daubechies-based pipelined discrete wavelet packet transform (DWPT) processor using finite impulse response (FIR) filter banks. The feed-forward pipelined (FFP) architecture is exploited for implementation of the DWPT on the field-programmable gate array (FPGA). The proposed DWPT is based on an efficient transpose form structure, thereby reducing its computational complexity by half of the system. Moreover, the efficiency of the design is further improved by using a canonical-signed digit-based binary expression (CSDBE) and advanced functional sharing (AFS) methods. In this work, the AFS technique is proposed to optimize the convolution of FIR filter banks for DWPT decomposition, which reduces the hardware resource utilization by not requiring any embedded digital signal processing (DSP) blocks. The proposed AFS and CSDBE-based DWPT system is embedded on the Virtex-7 FPGA board for testing. The proposed design is implemented as an intellectual property (IP) logic core that can easily be integrated into DSP systems for sub-band analysis. The achieved results conclude that the proposed method is very efficient in improving hardware resource utilization while maintaining accuracy of the result of DWPT.

Article Statistics
Multiple requests among the same broswer session are counted as one view (or download).
If you mouse over a chart, a box will show the data point's value.


Cite this article
IEEE Style
H. Nguyen, C. Kim and J. Kim, "Optimization of Pipelined Discrete Wavelet Packet Transform Based on an Efficient Transpose Form and an Advanced Functional Sharing Technique ," Journal of Information Processing Systems, vol. 15, no. 2, pp. 374~385, 2019. DOI: 10.3745/JIPS.01.0041.

ACM Style
Hung-Ngoc Nguyen, Cheol-Hong Kim, and Jong-Myon Kim. 2019. Optimization of Pipelined Discrete Wavelet Packet Transform Based on an Efficient Transpose Form and an Advanced Functional Sharing Technique , Journal of Information Processing Systems, 15, 2, (2019), 374~385. DOI: 10.3745/JIPS.01.0041.