Title :
Blind equalization of nonlinear digital satellite links with PSK modulation
Author :
López-Valcarce, Roberto ; Dasgupta, Soura
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa Univ., Iowa City, IA, USA
Abstract :
Satellite communication systems suffer from nonlinear intersymbol interference due to the limited bandwidth of the filters and the need to operate the onboard amplifier near saturation. We consider the blind equalization problem for this class of systems in a multichannel setting. By exploiting the bandpass nature of the channel and the statistical properties of PSK constellations, a simple necessary and sufficient condition for blind equalizability from the second-order statistics of the received signal is derived. An algorithm for the extraction of the equalizers is also given
Keywords :
blind equalisers; digital radio; intersymbol interference; phase shift keying; satellite links; PSK modulation; blind equalization algorithm; intersymbol interference; multichannel communication system; nonlinear digital satellite link; parameter extraction; second-order statistics; Band pass filters; Bandwidth; Blind equalizers; Digital modulation; Finite impulse response filter; Intersymbol interference; Kernel; Phase shift keying; Satellites; Vectors;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921334
