Design of Multiplier-Less MDFT Filter Banks with Perfect Reconstruction using ABC Algorithm

Sakthivel, V.; Chandru, Rathlavath; Elias, Elizabeth

doi:10.5120/16758-6312

Cited by 6 publications

(7 citation statements)

References 15 publications

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“…with g k ðnÞ ¼ h 0 ðMn À kÞ; k ¼ 0; 1; 2; ……M À 1 (8) where M is any integer. The MDFT filter banks guarantee PR as proved in [6], if the prototype filter has a length of N ¼ r:M þ 1, where r is an integer and only if the following condition on the polyphase filters is satisfied [6].…”

Section: Modified Dft Filter Banksmentioning

confidence: 99%

“…The aliasing distortion is completely removed in the design of MDFT filter banks with PR.Very low amplitude distortion occurs due to the degree of overlap between the adjacent filter responses. The pass-band and the stop-band edge frequencies are selected carefully, so that the adjacent filter responses intersect at 3 dB level [8].…”

Section: Design Of Mdft Filter Banks With Pr Using Firmentioning

confidence: 99%

“…The design of the prototype filter is done as in [8] and the filter bank with PR is obtained. The number of multipliers required to realize FIR prototype filter is obtained as 1283.…”

Section: Design Of Mdft Filter Banks With Pr Using Firmentioning

confidence: 99%

“…Linear phase prototype FIR filter using Parks McClellan method is used for the design of MDFT filter bank with PR [8]. The polyphase realization of the non-critically sub-sampled M-channel DFT filter bank is used to get PR in MDFT filter banks [6].…”

Section: Design Of Mdft Filter Banks With Pr Using Firmentioning

confidence: 99%

“…The shifters and adders in the SPT space will replace the multipliers in the filter implementation. Thus we can get multiplier-free MDFT filter banks with PR [8]. CSD representation is a special form of SPT representations and is a minimal one [9].…”

Section: Introductionmentioning

confidence: 99%

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Design of low complexity sharp MDFT filter banks with perfect reconstruction using hybrid harmony-gravitational search algorithm

Sakthivel

Elias

2015

Engineering Science and Technology, an International Journal

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Keywords:MDFT filter banks with PR Frequency response masking Canonic signed digit Hybrid harmony-gravitational search algorithm Artificial bee colony algorithm Gravitational search algorithm Harmony search algorithm Genetic algorithm a b s t r a c t The design of low complexity sharp transition width Modified Discrete Fourier Transform (MDFT) filter bank with perfect reconstruction (PR) is proposed in this work. The current trends in technology require high data rates and speedy processing along with reduced power consumption, implementation complexity and chip area. Filters with sharp transition width are required for various applications in wireless communication. Frequency response masking (FRM) technique is used to reduce the implementation complexity of sharp MDFT filter banks with PR. Further, to reduce the implementation complexity, the continuous coefficients of the filters in the MDFT filter banks are represented in discrete space using canonic signed digit (CSD). The multipliers in the filters are replaced by shifters and adders. The number of non-zero bits is reduced in the conversion process to minimize the number of adders and shifters required for the filter implementation. Hence the performances of the MDFT filter bank with PR may degrade. In this work, the performances of the MDFT filter banks with PR are improved using a hybrid Harmony-Gravitational search algorithm.

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Section: Modified Dft Filter Banksmentioning

confidence: 99%

Section: Design Of Mdft Filter Banks With Pr Using Firmentioning

confidence: 99%

“…The design of the prototype filter is done as in [8] and the filter bank with PR is obtained. The number of multipliers required to realize FIR prototype filter is obtained as 1283.…”

Section: Design Of Mdft Filter Banks With Pr Using Firmentioning

confidence: 99%

Section: Design Of Mdft Filter Banks With Pr Using Firmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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