A low complexity reconfigurable non-uniform filter bank for channelization in multi-standard wireless communication receivers

In a typical multi-standard wireless communication receiver, the channelizer must have the capability of extracting multiple channels (frequency bands) of distinct bandwidths corresponding to different communication standards. The channelizer operates at the highest sampling rate in the digital fron...

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Main Authors: Darak, Sumit Jagdish, Vinod, Achutavarrier Prasad, Lai, Edmund Ming-Kit
Other Authors: School of Computer Engineering
Format: Article
Language:English
Published: 2013
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Online Access:https://hdl.handle.net/10356/95855
http://hdl.handle.net/10220/11429
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-958552020-05-28T07:18:07Z A low complexity reconfigurable non-uniform filter bank for channelization in multi-standard wireless communication receivers Darak, Sumit Jagdish Vinod, Achutavarrier Prasad Lai, Edmund Ming-Kit School of Computer Engineering DRNTU::Engineering::Computer science and engineering In a typical multi-standard wireless communication receiver, the channelizer must have the capability of extracting multiple channels (frequency bands) of distinct bandwidths corresponding to different communication standards. The channelizer operates at the highest sampling rate in the digital front end of receiver and hence power efficient low complex architecture is required for cost-effective implementation of channelizer. Reconfigurability is another key requirement in the channelizer to support different communication standards. In this paper, we propose a low complexity reconfigurable filter bank (FB) channelizer based on coefficient decimation, interpolation and frequency masking techniques. The proposed FB architecture is capable of extracting channels of distinct (non-uniform) bandwidths from the wideband input signal. Design example shows that the proposed FB offers multiplier complexity reduction of 83% over Per-Channel (PC) approach and 60% over Modulated Perfect Reconstruction FB. The proposed FB when designed as a uniform FB (subbands of equal bandwidths), offers a complexity reduction of 20% over Discrete Fourier Transform FB (DFTFB) and 57% over Goertzel Filter Bank. Furthermore, the proposed FB has an added advantage of dynamic reconfigurability over these FBs. The proposed FB is implemented on Xilinx Virtex 2v3000ff1152-4 FPGA with 16 bit precision. The PC approach and DFTFB are also implemented on the same FPGA with 14 bit precision. The implementation results shows an average slice reduction of 29.14% and power reduction of 46.84% over PC approach, 14.39% and 2.67% over DFTFB. 2013-07-15T06:47:14Z 2019-12-06T19:22:21Z 2013-07-15T06:47:14Z 2019-12-06T19:22:21Z 2011 2011 Journal Article Darak, S. J., Vinod, A. P., & Lai, E. M.-K. (2012). A low complexity reconfigurable non-uniform filter bank for channelization in multi-standard wireless communication receivers. Journal of signal processing systems, 68(1), 95-111. https://hdl.handle.net/10356/95855 http://hdl.handle.net/10220/11429 10.1007/s11265-011-0579-9 en Journal of signal processing systems © 2011 Springer Science+Business Media, LLC.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Computer science and engineering
spellingShingle DRNTU::Engineering::Computer science and engineering
Darak, Sumit Jagdish
Vinod, Achutavarrier Prasad
Lai, Edmund Ming-Kit
A low complexity reconfigurable non-uniform filter bank for channelization in multi-standard wireless communication receivers
description In a typical multi-standard wireless communication receiver, the channelizer must have the capability of extracting multiple channels (frequency bands) of distinct bandwidths corresponding to different communication standards. The channelizer operates at the highest sampling rate in the digital front end of receiver and hence power efficient low complex architecture is required for cost-effective implementation of channelizer. Reconfigurability is another key requirement in the channelizer to support different communication standards. In this paper, we propose a low complexity reconfigurable filter bank (FB) channelizer based on coefficient decimation, interpolation and frequency masking techniques. The proposed FB architecture is capable of extracting channels of distinct (non-uniform) bandwidths from the wideband input signal. Design example shows that the proposed FB offers multiplier complexity reduction of 83% over Per-Channel (PC) approach and 60% over Modulated Perfect Reconstruction FB. The proposed FB when designed as a uniform FB (subbands of equal bandwidths), offers a complexity reduction of 20% over Discrete Fourier Transform FB (DFTFB) and 57% over Goertzel Filter Bank. Furthermore, the proposed FB has an added advantage of dynamic reconfigurability over these FBs. The proposed FB is implemented on Xilinx Virtex 2v3000ff1152-4 FPGA with 16 bit precision. The PC approach and DFTFB are also implemented on the same FPGA with 14 bit precision. The implementation results shows an average slice reduction of 29.14% and power reduction of 46.84% over PC approach, 14.39% and 2.67% over DFTFB.
author2 School of Computer Engineering
author_facet School of Computer Engineering
Darak, Sumit Jagdish
Vinod, Achutavarrier Prasad
Lai, Edmund Ming-Kit
format Article
author Darak, Sumit Jagdish
Vinod, Achutavarrier Prasad
Lai, Edmund Ming-Kit
author_sort Darak, Sumit Jagdish
title A low complexity reconfigurable non-uniform filter bank for channelization in multi-standard wireless communication receivers
title_short A low complexity reconfigurable non-uniform filter bank for channelization in multi-standard wireless communication receivers
title_full A low complexity reconfigurable non-uniform filter bank for channelization in multi-standard wireless communication receivers
title_fullStr A low complexity reconfigurable non-uniform filter bank for channelization in multi-standard wireless communication receivers
title_full_unstemmed A low complexity reconfigurable non-uniform filter bank for channelization in multi-standard wireless communication receivers
title_sort low complexity reconfigurable non-uniform filter bank for channelization in multi-standard wireless communication receivers
publishDate 2013
url https://hdl.handle.net/10356/95855
http://hdl.handle.net/10220/11429
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