Analytical Expression for Average SNR of Correlated Dual Selection Diversity System
نویسندگان
چکیده
We use a recently developed expression for the bivariate Rayleigh cumulative distribution function (CDF) to derive a novel analytical formula for the average signal-to-noise ratio (SNR) of the correlated dual selection combining (SC) system under slow Rayleigh fading. We relate the average SNR diversity gain to spatial correlation as well as to antenna separation. Furthermore, we also develop a more practical channel model in which multipath scatters are from more than one incident angle, each with a certain beamwidth. For any scattering field from our model, the average SNR diversity gain can be easily related to the antenna separation. Finally, we corroborate our theory with a simulation study. Index Terms — Antenna Diversity, Spatial Correlation, Selection Combining, Multipath Interference, Space Time Scattering Channel Model.
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