O'Reilly logo

Direct Broadcast Satellite Communications: An MPEG Enabled Service by Donald C. Mead

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Appendices

A Performance Degradation Because of Rain
B QPSK Modulation and Demodulation
C Algebraic Preliminaries
D BCH Code Details
E Cyclical Redundancy Code
F AS Matrix
G Operators, Mnemonics, Abbreviations

Appendix A. Performance Degradation Because of Rain

For carrier frequencies above 10 GHz, rain will degrade performance. The following three different mechanisms contribute to this degradation.

1. Attenuation

2. An increase in sky noise temperature

3. Interference from adjacent channels when polarization is used for frequency reuse. This is caused by depolarization.

Each of these sources of degradation is calculated in the sections here, followed by a discussion of how each affects performance.

A.1 Rain Attenuation

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required