Multicarrier transmission system with reduced complexity leakage matrix multiplication

摘要

Described is a transmission system for transmitting a multicarrier signal from a transmitter ( 10 ) to a receiver ( 20 ). The multicarrier signal comprises a plurality of subcarriers. The receiver ( 20 ) comprises a channel estimator ( 28 ) for estimating amplitudes of the subcarriers and for estimating time derivatives of the amplitudes. The receiver ( 20 ) further comprises an equalizer ( 24 ) for canceling intercarrier interference included in the received multicarrier signal in dependence on the estimated amplitudes and derivates ( 29 ). The receiver ( 20 ) comprises a multiplication by a NxN leakage matrix, and wherein the multiplication is implemented as a sequence of an N-point IFFT ( 82 ), N pointwise multiplications ( 84 ) and an N-point FFT ( 86 ). multiplications ( 84 ) and an N-point FFT ( 86 ).