Patent ID: 7324437

Claim:
A digital multi-carrier communication system, comprising: at least one receiving branch, each receiving branch comprising a demodulating device configured for converting a received serial multi-carrier signal into a plurality of sub-carrier signals, the received serial multi-carrier signal comprising at least one desired signal and at least one interference signal, each demodulating device of the at least one receiving branch comprising: a serial-to-parallel converter configured for converting the received serial multi-carrier signal into a plurality of parallel signal blocks; a cyclic extension removal device configured for removing cyclic extensions inserted into a transmitted multi-carrier signal for removing inter-block interference; and a Discrete Fourier Transform device configured for converting each signal block into a plurality of sub-carrier signals, wherein the cyclic extension removal device is connected between the serial-to-parallel converter and the Discrete Fourier Transform device; and a plurality of interference cancellers each associated with a respective one of the plurality of sub-carrier signals and configured for subtracting an estimated desired received sub-carrier signal and an estimated interference sub-carrier signal from a received sub-carrier signal so as to cancel co-channel interference.