METHOD AND DEVICE FOR DETERMINING THE NUMBER OF UNCORRELATED TRANSMISSION CHANNELS IN A MIMO TRANSMISSION SYSTEM

摘要

A method for determining a number of uncorrelated transmission channels in a multiple-input-multiple-output transmission system determines the transmission coefficients h₁₁,h₁₂,..., h_ΝΜ of a transmission matrix H of the MIMO system and determines the number N of eigenvalues of the transmission matrix H. The number of uncorrelated transmission channels is determined by a rank k of the transmission matrix H, for which a quotient γ(k); γ(k)' between the sum of the k biggest eigenvalues and at least the next smaller eigenvalue of all N—k smaller eigenvalues is below a threshold value ρ_Th.