NDLI: Multi-resolution PR NMDFBs for programmable variable bandwidth filter in wideband digital transceivers

Content Provider	IEEE Xplore Digital Library
Author	Harris, F. Farzad, B. Venosa, E. Xiaofei Chen
Copyright Year	2014
Description	Author affiliation: Broadcom Corp., San Diego, CA, USA (Farzad, B.) \|\| San Diego State Univ., San Diego, CA, USA (Harris, F.; Venosa, E.; Xiaofei Chen)
Abstract	This paper describes a novel application of perfect reconstruction (PR) non-maximally decimated filter banks (NMDFBs). PR non-maximally decimated analysis/synthesis chains are used for performing resampling, channelization and filtering in very wideband software defined radios. Digital wideband filtering is currently limited by the hardware clock speed which constrains the maximum signal bandwidth that can be processed digitally. Polyphase channelizers decrease the sample rate of the input signals and parallelize the wideband filtering process at cost of a single filter. In this paper we show how to assemble multiple-tier PR analysis/synthesis channelizer chains for implementing, in a very efficient way, variable bandwidth digital filters and multi-resolution systems operating on very wideband signals. When an internal tier analysis channelizer is applied to a single output channel of a first external tier analysis channelizer it decomposes this channel in multiple narrower subchannels and, by applying appropriate complex processing elements to those sub-channels we can modify the designed filter bandwidth as desired.
Starting Page	104
Ending Page	109
File Size	745095
Page Count	6
File Format	PDF
ISBN	9781479946129
ISSN	21653577
DOI	10.1109/ICDSP.2014.6900809
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-08-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	variable bandwidth filter Non-maximally decimated filter bank perfect reconstruction polyphase channelizer digital receiver
Content Type	Text
Resource Type	Article

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