Title :
Cross-polarization interference cancellation in the presence of delay effects
Author :
Lankl, B. ; Nossek, J.A. ; Sebald, G.
Author_Institution :
Siemens AG, Munich, West Germany
Abstract :
It is shown how a fractionally spaced transversal canceler with five taps is capable of providing large improvement factors in channel situations of practical significance, including large delay differences. How the capability of counteracting the depolarization depends on the performance of the adaptive equalizer in the system is shown using a realistic channel model with bidirectional crosstalk. For an optimum system configuration, a matching between the equalizer and canceler capability is necessary. This has been verified experimentally for a 140 Mb/s system employing 16 QAM and operating with plesiochronous data streams.<>
Keywords :
digital radio systems; equalisers; interference suppression; 140 Mbit/s; 16 QAM; adaptive equalizer; bidirectional crosstalk; cross polarisation interference cancellation; delay effects; depolarization; digital radio system; fractionally spaced transversal canceler; optimum system configuration; plesiochronous data streams; realistic channel model; Antennas and propagation; Bandwidth; Crosstalk; Delay effects; Frequency conversion; Interchannel interference; Interference cancellation; Polarization; Quadrature amplitude modulation; Radio frequency;
Conference_Titel :
Communications, 1988. ICC '88. Digital Technology - Spanning the Universe. Conference Record., IEEE International Conference on
Conference_Location :
Philadelphia, PA, USA
DOI :
10.1109/ICC.1988.13771
