In [33], another model is presented in which the Numerical Weather Prediction (NWP) analysis products are used; starting from rain rate, rain attenuation time series are generated in maps and therefore correlation is induced. Nevertheless, in the latter methodology data resolution is small rendering it inappropriate for use in micro-scale systems. In [34], a new approach for modeling joint statistics of rain attenuation in site-diversity systems based on Gaussian copula functions [35] has been presented, while in [36], the same copula functions are used to model the joint temporal statistics of rain attenuation through the generation of rain attenuation time series for single links. The advantages of using copula functions are: (a) there is no need to model the single-link rain attenuation statistics with a particular distribution and (b) rain attenuation between multiple links is not assumed to be linearly correlated in order to model their spatial dependence. In this paper, the use of a micro-scale site diversity scheme for increasing the system capacity is investigated. Taking advantage of four years of available rainfall measurements for two locations within the National Technical University of Athens (NTUA) campus, rain attenuation time series are obtained using the Synthetic Storm Technique (SST) [37] and the outage capacity is then evaluated for a micro-scale dual-site diversity system. The SST is used due its highly accurate method of capturing the cumulative statistics of rain attenuation [38]. Moreover, a multi-dimensional time series synthesizer based on Gaussian copulasis proposed for generating rain attenuation time series at multiple spatially separated links. The synthesizer is based on the assumption that in the spatial and the temporal domain the joint distribution of rain attenuation can be modeled through Gaussian copulas. The spatial parameter of the copula is calculated from the rain attenuation time series derived using SST in order for the synthesizer to allow the evaluation of multi-site micro-scale diversity systems (e.g., triple and quadruple). Experimental campaigns for micro-scale site diversity scenarios have to be conducted in order to validate the presented results. The contributions of the paper are the following: (a) a micro-scale site diversity system is evaluated using rain rate time series and the achieved gain is observed, (b) a novel multi-dimensional rain attenuation time series synthesizer for multiple slant paths based on copula functions is proposed (c) a new spatial correlation coefficient for the rainfall medium across small distances is given (d) the performance of multi-site micro-scale transmission and reception schemes operating at Ka and Q band as MISO and SIMO schemes are investigated for the first time in the literature. The remainder of the paper is organized as follows: in Section 2, the system model and the expressions for the calculation of capacity for MISO and SIMO systems are given. In Section 3, the 4-year rainfall data-bank of NTUA is used for the evaluation of a dual-site micro-scale diversity system. In Section 4, a multi-dimensional copulas synthesizer is presented and used for the evaluation of micro-scale site diversity systems with multiple stations. In Section 5, the paper concludes summarizing the used methodology and commenting on the obtained results.