The temporal correlation is determined by the product f d τ, which is referred to as normalized Doppler frequency.
The degree of correlation is determined by the radio channel characteristics, the antenna constellation and orientation, as well as the antenna beam patterns.
At both ends, the spatial correlation is determined by the power azimuth spread of the propagation paths impinging at the antenna array.
According to Drexler and Brattin, a strong correlation is determined by an R2 > 0.6 and a significant relationship with a slope as close as possible to 1 [84].
Besides, modelling correlation as a stochastic process, not only the variation of the short-term correlation can be reflected, also the attributes of long-term correlation is determined by the long-term parameter values, like long-term mean value and mean reversion speed.
If allele frequencies do not change across generations, an allelic correlation is determined by a relative size of linkage disequilibrium D [ 33].
