
Summary: This paper presents a VLSI implementation of One Dimensional Direct Discrete Wavelet transform (1-D DWT). The DDWT can be viewed as a multi-resolution decomposition of a signal. This means that it decomposes a signal into its components in different frequency bands (octave bands). We propose a new architecture using parallel filters. We consider the implementation of 1-D three levels DWT. The proposed architecture is simple and offers 16-bit precision on input and output data. It is constituted of three basic units: one register bank, four filters, and a control unit. The filters are of different lengths and with new coefficients derived from Daubechies filter coefficients. The designed processor architecture requires no interface circuitry for interconnection to a standard communication bus. The architecture can compute DWT at a data rate of \(12\times 10^6\) samples/s corresponding to a typical clock speed of 12 MHz. The architecture is simulated at the gate level in VLSI.
wavelet-transforms, Computing methodologies and applications, PACS 85.42, digital-filters, computer-architecture, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Computing methodologies for image processing, Machine vision and scene understanding, 004
wavelet-transforms, Computing methodologies and applications, PACS 85.42, digital-filters, computer-architecture, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Computing methodologies for image processing, Machine vision and scene understanding, 004
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 5 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
