[1] Univ Duisburg Essen UDE, Inst Digital Signal Proc DSV, D-47057 Duisburg, Germany
[2] Univ Duisburg Essen, Gen & Theoret Elect Engn ATE, Fac Engn, D-47048 Duisburg, Germany
[3] Univ Duisburg Essen, CENIDE Ctr Nanointegrat Duisburg Essen, D-47048 Duisburg, Germany
[4] Univ Duisburg Essen, CENIDE Ctr Nanointegrat Duisburg Essen, Dept High Frequency Elect Components BHE, D-47048 Duisburg, Germany
[5] Univ Duisburg Essen, Chair Commun Syst NTS, D-47057 Duisburg, Germany
[6] Friedrich Alexander Univ Erlangen Nurnberg, Inst Microwaves & Photon LHFT, D-91058 Erlangen, Germany
[7] Ruhr Univ, Inst Mol Genet & Physiol Plants MGPP, D-44801 Bochum, Germany