Multidimensional high-resolution channel sounding in mobile radio

Multidimensional high resolution channel sounding is a method of wave propagation analysis, channel modeling, and link performance evaluation in mobile radio. For this application antenna array architecture design, calibration, and a maximum likelihood channel parameter estimation framework (RIMAX) is described. Depending on the available measured dimensions, the algorithm estimates the four coefficients of the polymetric path weight matrix, the direction of arrival, the direction of departure, the time delay of arrival, and the Doppler-shift of the specular paths. Moreover, the parameters of a statistical model of the dense multipath components resulting from distributed diffuse scattering are estimated. Additional reliability measures are calculated to enhance the robustness of the estimate.