Abstract
This paper presents performance analysis of dual-polarized M-ary Quadrature Amplitude Modulated (QAM) signals over nondispersive radio channels. In particular, dual-polarized, 16-QAM signals are examined. A simple method for adaptive cancellation of static and fade-induced cross-polarization interference is introduced. The cancellation is performed at baseband. For this canceler, two adaptation methods are studied. The results indicate that dual-polarized M-ary QAM is not feasible over fading channels unless means of adaptive cancellation of the cross-polarization interference are provided. The results also indicate that the adaptive algorithm employed in cross-polarization interference cancellation should take into account noise power reduction.
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