Low complexity reconfigurable channelizers using non-uniform filter banks. (May 2018)

• Record Type: Journal Article
• Authors: V, Sakthivel; Elias, Elizabeth
• Is Part Of: Computers & electrical engineering. Volume 68(2018)
• Page Start: 389
• Page End: 403
• Publication Date: 2018-05
• Subjects: Non-uniform MDFT filter banks -- Canonic signed digit -- Artificial bee colony algorithm -- Shift inclusive differential -- Common sub-expression elimination; Computer engineering -- Periodicals; Electrical engineering -- Periodicals; Electrical engineering -- Data processing -- Periodicals; Ordinateurs -- Conception et construction -- Périodiques; Électrotechnique -- Périodiques; Électrotechnique -- Informatique -- Périodiques; Computer engineering; Electrical engineering; Electrical engineering -- Data processing; Periodicals; Electronic journals; 621.302854
• DOI: 10.1016/j.compeleceng.2018.04.015
• Languages: English
• ISSNs: 0045-7906

Abstract

Abstract: A Software Defined Radio (SDR) channelizer needs reconfigurable sharp filter banks with low implementation complexity. In this paper, the design of non-uniform Modified Discrete Fourier Transform filter bank (MDFT FB) is proposed to be used in SDR channelizer. The frequency response masking technique is used to design the prototype filter which gives sharp filters with lower hardware complexity, compared to the finite impulse response filters. The canonic signed digit (CSD) representation is used in the design, to convert the continuous filter coefficients into discrete coefficients. Multi-objective artificial bee colony algorithm is utilized to improve the performance degradation when the CSD represented filter coefficients are used. Further, the shift inclusive differential technique with common sub-expression elimination is used to reduce the number of adders. Xilinx ISE is used to verify the hardware requirement, for the implementation of the non-uniform MDFT FB. Hence low complexity reconfigurable SDR channelizers using non-uniform MDFT FB is proposed in this paper.