Digital Architectures for UWB Beamforming Using 2D IIR Spatio-Temporal Frequency-Planar Filters
Joint Authors
Madanayake, Arjuna
Kondapalli, Soumya
Bruton, Len
Source
International Journal of Antennas and Propagation
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-19, 19 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-09-17
Country of Publication
Egypt
No. of Pages
19
Main Subjects
Abstract EN
A design method and an FPGA-based prototype implementation of massively parallel systolic-array VLSI architectures for 2nd-order and 3rd-order frequency-planar beam plane-wave filters are proposed.
Frequency-planar beamforming enables highly-directional UWB RF beams at low computational complexity compared to digital phased-array feed techniques.
The array factors of the proposed realizations are simulated and both high-directional selectivity and UWB performance are demonstrated.
The proposed architectures operate using 2's complement finite precision digital arithmetic.
The real-time throughput is maximized using look-ahead optimization applied locally to each processor in the proposed massively-parallel realization of the filter.
From sensitivity theory, it is shown that 15 and 19-bit precision for filter coefficients results in better than 3% error for 2nd- and 3rd-order beam filters.
Folding together with Ktimes multiplexing is applied to the proposed beam architectures such that throughput can be traded for K-fold lower complexity for realizing the 2-D fan filter banks.
Prototype FPGA circuit implementations of these filters are proposed using a Virtex 6 xc6vsx475t-2ff1759 device.
The FPGA-prototyped architectures are evaluated using area (A), critical path delay (T), and metrics AT and AT2.
The L2 error energy is used as a metric for evaluating fixed-point noise levels and the accuracy of the finite precision digital arithmetic circuits.
American Psychological Association (APA)
Kondapalli, Soumya& Madanayake, Arjuna& Bruton, Len. 2012. Digital Architectures for UWB Beamforming Using 2D IIR Spatio-Temporal Frequency-Planar Filters. International Journal of Antennas and Propagation،Vol. 2012, no. 2012, pp.1-19.
https://search.emarefa.net/detail/BIM-455966
Modern Language Association (MLA)
Kondapalli, Soumya…[et al.]. Digital Architectures for UWB Beamforming Using 2D IIR Spatio-Temporal Frequency-Planar Filters. International Journal of Antennas and Propagation No. 2012 (2012), pp.1-19.
https://search.emarefa.net/detail/BIM-455966
American Medical Association (AMA)
Kondapalli, Soumya& Madanayake, Arjuna& Bruton, Len. Digital Architectures for UWB Beamforming Using 2D IIR Spatio-Temporal Frequency-Planar Filters. International Journal of Antennas and Propagation. 2012. Vol. 2012, no. 2012, pp.1-19.
https://search.emarefa.net/detail/BIM-455966
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-455966