A Low-Complexity Multiplier-Less Filter Bank Based on Modified IFIR for the SDR Channelizer

Title

A Low-Complexity Multiplier-Less Filter Bank Based on Modified IFIR for the SDR Channelizer

Creator

Varghese R.C.; Amir A.

Description

Digital filter banks are extensively used in an SDR channelizer for channelization. The objective of this research work is to design a low computational complexity FIR filter bank for generating sharp transition width channels for SDR. The design of unified and variable bandwidth channels for SDR using the proposed structure is based on the modified IFIR filter structure and cosine modulation technique (CMT). The performance of the proposed structure is demonstrated with the help of an example. The results show that the multiplier complexity of the proposed structure is less than those of other state-of-the art methods. The optimization techniques are incorporated in this work to further reduce the complexity of the proposed structure. With the help of canonical signed digit (CSD), multi-objective artificial bee colony (MOABC) and shift inclusive differential coefficients (SIDC) common sub-expression elimination (CSE) optimization, the filter used in this structure is made multiplier-less. 2024 IETE.

Source

IETE Journal of Research, Vol-70, No. 4, pp. 3334-3346.

Date

2024-01-01

Publisher

Taylor and Francis Ltd.

Subject

Cosine modulation technique; FIR filters; Frequency response masking (FRM); Interpolated finite impulse response; Modified IFIR filter

Coverage

Varghese R.C., CHRIST (Deemed to be University), Karnataka, Bangalore, 560 074, India; Amir A., CHRIST (Deemed to be University), Karnataka, Bangalore, 560 074, India

Rights

Restricted Access

Relation

ISSN: 3772063

Format

Online

Language

English

Type

Article

Identifier

https://doi.org/10.1080/03772063.2023.2206371

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