Summary
|
For Full-Text PDF, please login, if you are a member of IEICE, or go to Pay Per View on menu list, if you are a nonmember of IEICE. |
|
Bitwidth Optimization for Low Power Digital FIR Filter Design Kosuke TARUMI Akihiko HYODO Masanori MUROYAMA Hiroto YASUURA Publication IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Vol.E88-A No.4 pp.869-875 Publication Date: 2005/04/01 Online ISSN: DOI: 10.1093/ietfec/e88-a.4.869 Print ISSN: 0916-8508 Type of Manuscript: Special Section PAPER (Special Section on Selected Papers from the 17th Workshop on Circuits and Systems in Karuizawa) Category: Keyword: low power design, bitwidth optimization, digital FIR filter, Full Text: PDF(526.9KB)>>
Summary: We propose a novel approach for designing a low power datapath in wireless communication systems. Especially, we focus on the digital FIR filter. Our proposed approach can reduce the power consumption and the circuit area of the digital FIR filter by optimizing the bitwidth of the each filter coefficient with keeping the filter calculation accuracy. At first, we formulate the constraints about keeping accuracy of the filter calculations. We define the problem to find the optimized bitwidth of each filter coefficient. Our defined problem can be solved by using the commercial optimization tool. We evaluate the effects of consuming power reduction by comparing the digital FIR filters designed in the same bitwidth of all coefficients. We confirm that our approach is effective for a low power digital FIR filter. | ||||||||||
| ||||||||||
