NDLI: Multi-rate signal processing that enables smart antenna, multi-channel communication, wideband intelligence gathering and data compression systems

Content Provider	IEEE Xplore Digital Library
Author	Crowley, R. Hinman, K.
Copyright Year	2005
Description	Author affiliation: Raytheon Co., St. Petersburg, FL (Crowley, R.)
Abstract	Moore's Law continues to drive higher levels of processing capacity, and in doing so, processes that were once deemed too costly now find their way into newly fielded products. In particular, multi-rate systems that digitally decompose a wideband signal into a continuous set of sub-band signals are now coming into common use. To enable this technique an efficient set of multi-rate algorithms must be used. The algorithms described in this paper are polyphase decomposition (analysis) and reconstruction (synthesis) algorithms that possess the pseudo perfect reconstruction property. Examples of system designs are described that point out the design trades of prototype filter size and type, word sizes, multiple decimation and interpolation rates, and filter design to achieve a specified baseband equivalent filter. The resulting designs show the tremendous efficiencies in required compute capacity for applications such as radar, electronic warfare, and communications systems. The sub-bands of these systems are processed in many ways including Doppler processing, pulse compression and space-time adaptive processing for radar; signal detection, parameter estimation and techniques generation for EW; data demodulation, limiting and modulation for communications. Additionally, in each case, depending on the type of system, processing may perform receive and transmit beamforming or an angle of arrival interferometer within the sub-bands or subsets of the sub-bands allowing manipulation of distinct band portions of the wideband signal
Starting Page	1026
Ending Page	1032
File Size	579016
Page Count	7
File Format	PDF
ISBN	0780393937
DOI	10.1109/MILCOM.2005.1605814
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Broadband antennas Signal processing Data compression Signal processing algorithms Filters Wideband Doppler radar Moore's Law Algorithm design and analysis Signal synthesis
Content Type	Text
Resource Type	Article

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