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Content Provider | IEEE Xplore Digital Library |
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Author | Kaya, Z. Seke, E. |
Copyright Year | 2014 |
Description | Author affiliation: Dept. of Electr. &Electron. Eng., Bilecik Seyh Edebali Univ., Bilecik, Turkey (Kaya, Z.) || Dept. of Electr. &Electron. Eng., Eskisehir Osmangazi Univ., Eskisehir, Turkey (Seke, E.) |
Abstract | A memory based upsampling/interpolating FIR filter modification/extension to distributed arithmetic (DA) based FIR filters is proposed that can be used for any filter coefficient set. Use of minimum or no multiplier is a desired design property when signal processing is performed using FPGAs since multipliers are scarce/expensive resources within FPGAs whereas registers and such are abundant. Upsampling a digital stream is usually performed by inserting zeros between original samples followed by a low pass filter to reject images. Compared to basic distributed arithmetic based filter designs where partial products/sums are stored in memory blocks, our design stores interpolation values. These samples are output sequentially using a simple counter, eliminating zero insertions and saving circuit elements. As an example FIR filter, we have designed a raised-cosine band-limiting filter with example roll-off factor and upsampling values. Successful implementation using VHDL+FPGA with ease has proven that the approach is a simple and effective compared to input upsampling. |
Sponsorship | IEEE Poland Sect. |
Starting Page | 110 |
Ending Page | 113 |
File Size | 200624 |
Page Count | 4 |
File Format | |
ISBN | 9781479933037 |
DOI | 10.1109/DT.2014.6868700 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2014-07-09 |
Publisher Place | Slovakia |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Finite impulse response filters Radiation detectors FPGA IIR filters Registers Upsamling Raised-cosine Field programmable gate arrays FIR Clocks |
Content Type | Text |
Resource Type | Article |
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