Reduced complexity intercarrier interference cancellation
AssigneeKoninklijke Philips Electronics N.V.
InventorsAlexei Gorokhov, Johan Paul Marie Gerard Linnartz
Life of this patent
Estimating the term…
Abstract
Described is a transmission system for transmitting a multicarrier signal from a transmitter (10) to a receiver (20). The receiver (20) comprises an equalizer (24) for canceling intercarrier interference which may be included in the received multicarrier signal. The equalizer (24), which preferably is a MMSE equalizer, comprises a reduced complexity filter for deriving a vector of estimated symbols (25) from a vector of received symbols (23). The reduced complexity filter comprises a multiplication of an approximation of an inverse matrix R−1 with the vector of received symbols (23). The approximation of the inverse matrix R−1 is preferably a first order approximation.
Claims15
A transmission system, the transmission system comprising:
- a transmitter for transmitting a multicarrier signal;
- and
- a receiver for receiving the multicarrier signal from the transmitter, the receiver comprising an equalizer for canceling intercarrier interference included in the received multicarrier signal, wherein the equalizer comprises a fitter having a complexity less than cubic with respect to a number of subcarriers, said filter deriving a vector of estimated symbols from a vector of received symbols;
- wherein said filter is implemented by approximating an inverse matrix R−1.
A receiver for receiving a multicarrier signal from a transmitter, the receiver comprising an equalizer for canceling intercarrier interference included in the received multicarrier signal, wherein the equalizer comprises a filter having a complexity less than cubic with respect to a number of subcarriers, said filter deriving a vector of estimated symbols from a vector of received symbols;
- wherein said filter is implemented by approximating an inverse matrix R−1.
An equalizer for canceling intercarrier interference included in the received multicarrier signal, wherein the equalizer comprises a filter having a complexity less than cubic with respect to a number of subcarriers, said filter deriving a vector of estimated symbols from a vector of received symbols;
- wherein said filter is implemented by approximating an inverse matrix R−1.
A method for canceling intercarrier interference included in a received multicarrier signal, the method comprising filtering a vector of received symbols with a filter having a complexity less than cubic with respect to a number of subcarriers in order to derive a vector of estimated symbols;
- wherein said filter is implemented by approximating an inverse matrix R−1.
Dependencies are inferred from the claim text.