Laguerre digital filter design
ICASSP '95 Proceedings of the Acoustics, Speech, and Signal Processing, 1995. on International Conference - Volume 02
Handbook on Advancements in Smart Antenna Technologies for Wireless Networks
Handbook on Advancements in Smart Antenna Technologies for Wireless Networks
Design of frequency invariant beamformer without temporal filtering
IEEE Transactions on Signal Processing
Wideband smart antenna theory using rectangular array structures
IEEE Transactions on Signal Processing
Wideband beamspace adaptive array utilizing FIR fan filters formultibeam forming
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Optimum Laguerre networks for a class of discrete-time systems
IEEE Transactions on Signal Processing
Broadband Beamforming Using TDL-Form IIR Filters
IEEE Transactions on Signal Processing
Design of Frequency Invariant Beamformers for Broadband Arrays
IEEE Transactions on Signal Processing
On the determination of the optimal pole position of Laguerrefilters
IEEE Transactions on Signal Processing
Adaptive Laguerre-lattice filters
IEEE Transactions on Signal Processing
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Space-time processing is a well-substantiated method for designing broadband beamformers. In the conventional Frost space-time beamformer, tapped delay line (TDL) filters are used in each branch of the array to create a wideband response for interference suppression. In this article a new space-time beamforming method is introduced in which Laguerre filters replace the traditional TDL filters in the Frost beamformer. The Laguerre filters are fundamentally IIR filters but with only one pole in their structure. Unlike other IIR-based space-time beamforming methods, the proposed method does not need an adaptive procedure for the pole adjustment and is inherently stable. Simulation results show superior performance of the proposed method compared to the Frost beamformer and comparable results against other IIR-based beamformers with much less computational complexity and guaranteed stability.