The error rate in a baud-synchronous f.s.k. signal in the presence of receiver or thermal noise is shown to have a nega¬tive exponential dependence on signal power in the absence of fading. If fading with Rayleigh statistics occurs, the error goes inversely as signal strength resulting in a large increase of probability of baud error, and implying the need for some form of diversity reception. Four methods for combining the outputs of any number of receivers are considered and analytical expressions derived for the error probability.nThe results are also applicable to other binary orthogonal baud systems that meet certain requirements. Results are applicable to space, frequency and polarization diversity.
展开▼
