Title: Multiuser Communication Based on the DFT Eigenstructure,
Abstract: The eigenstructure of the discrete Fourier transform (DFT) is examined and
new systematic procedures to generate eigenvectors of the unitary DFT are
proposed. DFT eigenvectors are suggested as user signatures for data
communication over the real adder channel (RAC). The proposed multiuser
communication system over the 2-user RAC is detailed.