Title :
A two-dimensional channel simulation model for shadowing processes
Author :
Cai, Xiaodong ; Giannakis, Georgios B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Minnesota, Minneapolis, MN, USA
Abstract :
A Gaussian random process with a given power spectral density (PSD) function can be modeled as a sum of sinusoids (SOS), and has been widely used to simulate Rayleigh-fading communication channels. The conventional one-dimensional (1D) channel model cannot capture the spatial correlation of shadowing processes. We here develop a two-dimensional (2D) SOS-based channel model to simulate the shadowing process. Three methods to fit the PSD of the simulated process to the true channel´s PSD are explored. Performance of the proposed channel simulator is analyzed in terms of the autocorrelation function of the simulated shadowing process. Simulations illustrate the potential of the proposed channel simulation model.
Keywords :
Gaussian channels; channel estimation; correlation theory; mobile radio; simulation; spectral analysis; 2D channel model; Gaussian random process; autocorrelation function; channel simulator; mobile radio communication; performance; power spectral density function; shadowing processes; sum of sinusoids; two-dimensional channel simulation model; Analytical models; Autocorrelation; Computational modeling; Computer simulation; Fading; Frequency; Government; Radio transmitters; Random processes; Shadow mapping;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2003.819627
