RECOMMENDATION ITU-R F.1106 - EFFECTS OF PROPAGATION ON THE DESIGN AND OPERATION OF TRANS-HORIZON RADIO-RELAY SYSTEMS
ANNEX 1 - Factors concerning effects of propagation on the design and operation of trans-horizon radio-relay systems
1. Introduction
2. Drop in antenna gain
3. Choice of frequency band
4. Diversity reception in trans-horizon radio-relay links
    4.1 Methods of obtaining diversity signals
    4.2 Considerations of transmission bandwidth
5. The effects of multipath dispersion on the performance of digital trans-horizon systems
    5.1 General effects of time dispersion of multipath
    5.2 Performance predictions and measurements
    5.3 Transmission methods for increasing the equivalent order of diversity
    5.4 Adaptive equalization
    5.5 Comparative evaluation of effective modems