Title :
Beamforming of Temporally-Broadband-Bandpass Plane Waves using Real Polyphase 2-D FIR Trapezoidal Filters
Author :
Gunaratne, Thushara K. ; Bruton, Len T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Calgary Univ., Alta.
Abstract :
A new discrete-domain method is proposed for the beamforming of two-dimensional (2D) temporally-broadband-bandpass (BB-BP) plane waves (PWs) using 2D spatiotemporal (ST) FIR filter having a novel rectangularly-symmetric double-trapezoidal-shaped passband. A real-coefficient polyphase 2D FIR filter structure is used to reduce the arithmetic complexity of the hardware implementation. Measured spatiotemporal performance has confirmed that this method is capable of selectively enhancing 2D temporally broadband-bandpass (BB-BP) ST PWs according to their directions of arrival (DOAs) under severe co-channel interference.
Keywords :
FIR filters; cochannel interference; 2D FIR trapezoidal filters; arithmetic complexity; cochannel interference; temporally-broadband-bandpass plane waves; Arithmetic; Array signal processing; Bandwidth; Electronic mail; Finite impulse response filter; Frequency; Hardware; Passband; Sampling methods; Two dimensional displays;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378806
