CONTENTS

Policy on Intellectual Property Right (IPR)
�1���� Introduction
�2���� Propagation loss
������� 2.1���� Attenuation due to atmospheric gases
������� 2.2���� Diffraction fading
����������������� 2.2.1���� Diffraction loss dependence on path clearance
����������������� 2.2.2���� Planning criteria for path clearance
������� 2.3���� Fading and enhancement due to multipath and related mechanisms
����������������� 2.3.1���� Method for small percentages of time
����������������� 2.3.2���� Method for all percentages of time
����������������� 2.3.3���� Prediction method for enhancement
����������������� 2.3.4���� Conversion from average worst month to average annual distributions
����������������� 2.3.5���� Conversion from average worst month to shorter worst periods of time
����������������� 2.3.6���� Prediction of non-selective outage (see Note 1)
����������������� 2.3.7���� Occurrence of simultaneous fading on multi-hop links
����������������� 2.3.8���� Statistical data on the number of attenuation events lasting for 10 s or longer due to multipath propagation
������� 2.4���� Attenuation due to hydrometeors
����������������� 2.4.1���� Long-term statistics of rain attenuation
����������������� 2.4.2���� Combined method for rain and wet snow
����������������� 2.4.3���� Frequency scaling of long-term statistics of rain attenuation
����������������� 2.4.4���� Polarization scaling of long-term statistics of rain attenuation
����������������� 2.4.5���� Statistics of event duration and number of events
����������������� 2.4.6���� Rain attenuation in multiple hop networks
����������������� 2.4.7���� Prediction of outage due to precipitation
�3���� Variation in angle-of-arrival/launch
�4���� Reduction of cross-polar discrimination (XPD)
���� ���4.1���� Prediction of XPD outage due to clear-air effects
������� 4.2���� Prediction of XPD outage due to precipitation effects
����������������� 4.2.1���� XPD statistics during precipitation conditions
����������������� 4.2.2���� Step-by-step procedure for predicting outage due to precipitation effects
�5���� Distortion due to propagation effects
������� 5.1���� Prediction of outage in unprotected digital systems
�6���� Techniques for alleviating the effects of multipath propagation
������� 6.1���� Techniques without diversity
����������������� 6.1.1���� Increase of path inclination
����������������� 6.1.2���� Reduction of effect of surface reflections
����������������� 6.1.3���� Reduction of path clearance
������� 6.2���� Diversity techniques
��������� ��������6.2.1���� Antenna spacing in space diversity systems
����������������� 6.2.2���� Angular spacing in angle-diversity and combined space/angle-diversity systems
����������������� 6.2.3���� Frequency separation in frequency diversity systems
�������� ���������6.2.4���� Space-diversity improvement in narrow-band systems
����������������� 6.2.5���� Diversity techniques in digital systems
�7���� Prediction of total outage
�8���� Propagation aspects of bringing-into-service