Title :
Blind beamforming/geolocation for wideband-FFHs with unknown hop-sequences
Author :
Wong, Kainam Thomas
Author_Institution :
Chinese Univ. of Hong Kong, Shatin, China
fDate :
1/1/2001 12:00:00 AM
Abstract :
An ESPRIT based adaptive geolocation and blind interference rejection scheme is herein proposed for multiple noncooperative wideband fast frequency-hop (FFH) signals of unknown hop sequences and unknown arrival angles using one electromagnetic vector-sensor. Beamforming weights need no adjustments to accommodate the frequency hops. The sources´ polarizational diversity, angular spatial diversity, and temporal characteristics are all exploited. Applications include electronic surveillance and direction finding of noncooperative sources, plus blind cochannel interference rejection in frequency-hop code-division multiple-access (FH-CDMA) wireless communications
Keywords :
array signal processing; cochannel interference; code division multiple access; covariance matrices; direction-of-arrival estimation; diversity reception; eigenvalues and eigenfunctions; frequency hop communication; interference suppression; radio direction-finding; ESPRIT based scheme; FH-CDMA wireless communication; adaptive geolocation; angular spatial diversity; blind beamforming; blind interference rejection; cochannel signals; direction finding; electromagnetic vector-sensor; electronic surveillance; multiple noncooperative wideband FFH signals; noncooperative sources; polarizational diversity; temporal characteristics; unknown arrival angles; unknown hop sequences; Array signal processing; Electromagnetic interference; Electromagnetic wave polarization; Frequency; Jamming; Multiple access interference; Navigation; Sensor arrays; Wideband; Wireless communication;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
