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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Tay-Jyi Lin Tsung-Hsun Yang Chein-Wei Jen |
| Copyright Year | 2003 |
| Description | Author affiliation: Dept. of Electron. Eng., Nat. Chiao Tung Univ., Taiwan (Tay-Jyi Lin; Tsung-Hsun Yang; Chein-Wei Jen) |
| Abstract | The hardware complexity of digital filters is not controllable by straightforwardly rounding the coefficients to the quantization levels. In this paper, we propose an effective alternative that distributes a pre-defined addition budget to the multiplier-less FIR filters, which takes into account the common sub-expression sharing inside the computations. We successfully integrate a heuristic common sub-expression elimination (CSE) algorithm and the coefficient quantization by successive approximation proposed by Li et al. Besides, we also propose an improved search algorithm for an optimal scale factor to settle the coefficients collectively into the quantization space. Simulation results show that CSE effectively reduces 29. 1%/spl sim/31.5% budgets for comparable filter responses. Besides, the improved scale factor exploration helps to find an identical or a better (never worse) quantization result with only 32.67%/spl sim/44.53% run time, whether or not CSE is applied. |
| Sponsorship | IEEE Circuits & Syst. Soc Mahanakorn Univ. Technol |
| File Size | 314475 |
| File Format | |
| ISBN | 0780377613 |
| DOI | 10.1109/ISCAS.2003.1206222 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-05-25 |
| Publisher Place | Thailand |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Finite impulse response filter Quantization Hardware Fast Fourier transforms Discrete cosine transforms Digital filters Distributed computing Approximation algorithms Computational modeling Digital signal processing |
| Content Type | Text |
| Resource Type | Article |
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