Measuring device for determining at least a first parameter and a second parameter of a measuring signal, comprising: - receiving means for receiving the measuring signal, - processing means (11, 13), wherein the processing means (11, 13) comprise: - parameter setting means (20, 30) for setting an initial value of the first parameter, - iteration means (27, 37) for iteratively determining the parameters based upon the set initial value of the first parameter, characterized in that the measuring signal comprises a first signal and a second signal, that the first iteration means comprise - first parameter estimation means for jointly estimating carrier frequency offset and/or sample frequency offset and/or phase noise based upon initial starting values in a first iteration, - first I/Q offset estimation means for estimating an I/Q offset based upon results of the first parameter estimation means, and - first channel estimation means for estimating channel parameters based upon results of the first parameter estimation means and the first I/Q offset estimation means, that the first parameter estimation means are set up for using results of the first I/Q offset estimation means and of the first channel estimation means in further iterations, that the second iteration means comprise - second parameter estimation means for jointly estimating carrier frequency offset and/or sample frequency offset and/or phase noise based upon results of the first iteration means and the determined data symbols, - second I/Q offset estimation means for estimating an I/Q offset based upon results of the second parameter estimation means, and - second channel estimation means for estimating channel parameters based upon results of the second parameter estimation means and the second I/Q offset estimation means, that the second parameter estimation means are set up for using results of the second I/Q offset estimation means and of the second channel estimation means in further iterations, that the first parameter estimation means and the second parameter estimation means are set up for jointly estimating the carrier frequency offset and/or sample frequency offset and/or phase noise by deriving a cost function L with phase Φ and setting its differential of Φ to zero resulting in the following equation: d d Φ L = ∑ k ∑ l d d Φ L l, k = ∑ k ∑ l 2 ⋅ Re r l, k p R ⋅ ∑ λ = 0 L − 1 H ̃ k p R, λ ⋅ a l, k λ + b ⋅ C k *} = F l, k p R ⋅ j ⋅ exp − jΦ ≡ 0 wherein - L l,k is the calculated cost function on subcarrier k at OFDM symbol l, - r l,k ( p R) is a received symbol in the frequency domain on subcarrier k at OFDM symbol l of receiving antenna p R, - C k is an interference function, - b is an I/Q offset, - F l,k is equal to the term in the bracket, - N is the number of streams, - H̃ k ( p R,λ) are the complex effective channel coefficients between stream λ and receiving antenna p R, and - a l,k ( λ) is in case of the first iteration means the pilot symbol of stream λ on subcarrier k at OFDM symbol l and in case of the second iteration means the pilot and/or the data symbol of stream λ on subcarrier k at OFDM symbol l. - receiving means for receiving the measuring signal, - processing means (11, 13), - parameter setting means (20, 30) for setting an initial value of the first parameter, - iteration means (27, 37) for iteratively determining the parameters based upon the set initial value of the first parameter, - first parameter estimation means for jointly estimating carrier frequency offset and/or sample frequency offset and/or phase noise based upon initial starting values in a first iteration, - first I/Q offset estimation means for estimating an I/Q offset based upon results of the first parameter estimation means, and - first channel estimation means for estimating channel parameters based upon results of the first parameter estimation means and the first I/Q offset estimation means, - second parameter estimation means for jointly estimating carrier frequency offset and/or sample frequency offset and/or phase noise based upon results of the first iteration means and the determined data symbols, - second I/Q offset estimation means for estimating an I/Q offset based upon results of the second parameter estimation means, and - second channel estimation means for estimating channel parameters based upon results of the second parameter estimation means and the second I/Q offset estimation means, - L l,k is the calculated cost function on subcarrier k at OFDM symbol l, - r l,k ( p R) is a received symbol in the frequency domain on subcarrier k at OFDM symbol l of receiving antenna p R, - C k is an interference function, - b is an I/Q offset, - F l,k is equal to the term in the bracket, - N is the number of streams, - H̃ k ( p R,λ) are the complex effective channel coefficients between stream λ and receiving antenna p R, and - a l,k ( λ) is in case of the first iteration means the pilot symbol of stream λ on subcarrier k at OFDM symbol l and in case of the second iteration means the pilot and/or the data symbol of stream λ on subcarrier k at OFDM symbol l.