Multicarrier transmission system with reduced complexity...

Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train

Reexamination Certificate

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C375S346000, C375S148000, C375S229000

Reexamination Certificate

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10078932

ABSTRACT:
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 derivatives (29). The channel estimator (28) comprises a reduced complexity filter for deriving vectors of the estimated amplitudes and derivatives (29) from vectors of received symbols (23) and vectors of estimated symbols (27). The reduced complexity filter may be arranged for exploiting an amplitude correlation between the amplitudes of different subcarriers and/or for exploiting a derivative correlation between the derivatives of different subcarriers.

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J-P M. G. Linnartz et al.; “Doppler-Resistent OFDM Receivers for Mobile Multimedia Communications”, Proceedings of the International Symposium of Mobile Multimedia Systems and Applications, Nov. 9-10, 2000, pp. 87-92, XP001014332.

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