Frequency‐Nonselective Stochastic and Deterministic Channel Models
Matthias Pätzold · 2002
It is well known that the statistics of Rayleigh and Rice processes can only be influenced by a small number of parameters. This makes the mathematical description of the model much easier; however, it narrows the flexibility of these stochastic processes. In consequence, the statistical properties of real-world channels can only be roughly modelled with Rayleigh and Rice processes. For a finer adaptation to reality, one therefore needs more sophisticated model processes. Chapter 6 deals with the description of stochastic and deterministic processes for modelling frequency-nonselective mobile radio channels. The so-called extended Suzuki processes of Type I (Section 6.1) and of Type II (Section 6.2) as well as generalized Rice and Suzuki processes (Section 6.3) are derived and their statistical properties are analyzed. Apart from that, in Section 6.4, a modified version of the Loo model is introduced, containing the classical Loo model as a special case. To demonstrate the usefulness of all channel models suggested in this chapter, the statistical properties (probability density of the channel amplitude, level-crossing rate, and average duration of fades) of each model are fitted to measurement results in the literature and are compared with the corresponding simulation results.