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Reseach Article
FPGA Based Design and Implementation of Higher Order FIR Filter using Improved DA Algorithm
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 35 - Number 9 |
| Year of Publication: 2011 |
| Authors: Addanki Purna Ramesh, G. Nagarjuna, G. Siva Raam |
10.5120/4433-6173
|
Addanki Purna Ramesh, G. Nagarjuna, G. Siva Raam . FPGA Based Design and Implementation of Higher Order FIR Filter using Improved DA Algorithm. International Journal of Computer Applications. 35, 9 ( December 2011), 45-54. DOI=10.5120/4433-6173
Abstract
Aerospace applications contain accelerometers that are realized with FIR filter using DA (distributed arithmetic) algorithm. When the DA algorithm is directly applied in FPGA to realize FIR filter, it is difficult to achieve the best configuration in the coefficient of FIR filter i.e. the storage resource and the computing speed. To overcome the above difficulty we proposed an improved DA algorithm. This algorithm uses splitted LUTS which results usage of small memory and operational speed increases. The specifications of decimation FIR filter will be derived from the specifications of a third-order single bit sigma-delta modulator. We propose higher order decimation FIR filter i.e. 48th order implementing with less hard ware complexity. The hardware model for the filter was realized using verilog HDL.
References
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