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US 2002/0163983 A1Published application
Receiver window design for multicarrier communication systems
AssigneeTexas Instruments Incorporated
InventorArthur John Redferm
Life of this patent
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Abstract
A receiver window design algorithm (210) is developed which minimizes the noise power of the demodulated multicarrier signal. The windows are effective on a variety of different channels and noise sources. Receiver windowing is a computationally efficient technique for reducing noise spreading in multicarrier communication systems.
Claims29
A receiver for use with a multicarrier modulation communication system having noise conditions comprising:
- a demodulation module dividing a communication channel into multiple subchannels;
- an equalizer processing the channel;
- and
- at least one window having a window output applied before the equalizer responsive to observed the channel and the noise conditions and adapted to reduce error in the demodulator output on a selected set of the subchannels.
1 more element
A method of receiver windowing in a multicarrier modulation communication system, comprising the steps of:
- a) utilizing a frequency equalization (FEQ) structure to equalize a channel having a cyclic prefix;
- and
- b) shaping a receiver window as a function of the observed channel and noise conditions to reduce the number of errors of the equalized channel in the frequency domain.
Dependencies are inferred from the claim text.