Design of Programmable Linear Phase Equiripple FIR Filter based Chebyshev and Remez Algorithms
Abdulhassan Nasayif Aldujaili
Dr. Abdulhassan Nasayif Aldujaili, Department of Computer, Diglah University College, Baghdad, Iraq.
Manuscript received on November 02, 2014. | Revised Manuscript received on November 04, 2014. | Manuscript published on November 05, 2014. | PP: 16-19 | Volume-4 Issue-5, November 2014. | Retrieval Number: E2395114514/2014©BEIESP
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Abstract: In this paper, a novel algorithm of programmable linear phase Equiripple finite impulse response (PFIR) filter is developed and improved. The proposed algorithm is incorporated with Remez algorithm to calculate the minimum filter order and Chebyshev algorithm to minimize the error by optimize the filter order. A new algorithm and technique has been used to reduce the ripple in the pass-band filter response by insert different weights used in the different band. Additionally, the weights at the pass-band region are set to 30 times more than the stop-band weights to improve the adjacent band rejection and blocker response. Results show an development of passband ripple with improvement in the adjacent band rejection of 18% and 11% in blocker requirements more than conventional filter. These results confirm the validity of the proposed algorithms and the techniques used are promising to support the new generation requirements of wireless communication system.
Keywords: Linear phase, Equiripple, FIR, Chebyshev, Remez