Joint channel filtering and crest factor reduction architecture
AssigneeAltera Corporation
InventorsNima Safari, Richard Maiden
Life of this patent
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Abstract
A signal processing device includes a filter, configured to receive first data representing a signal for wireless transmission, modify the first data in a filter operation, and output second data as the modified first data; a peak detector, configured to detect third data representing a peak of the signal, wherein the third data are a subset of the first data; a signal canceller, configured to receive the third data and to generate fourth data representing a cancellation signal corresponding to the peak of the signal; and a peak modifier, configured to receive the second data and the fourth data, and to generate fifth data using the second data and the fourth data, wherein the fifth data represent the signal with a modified peak.
Claims10
A signal processing device, comprising:
- a filter, configured to receive first data representing a signal for wireless transmission, modify the first data in a filter operation, and output second data as the modified first data;
- a peak detector, configured to detect third data representing a peak of the signal, wherein the third data are a subset of the first data;
- a signal canceller, configured to receive the third data and to generate fourth data representing a cancellation signal corresponding to the peak of the signal;
- and
- a peak modifier, configured to receive the second data and the fourth data, and to generate fifth data using the second data and the fourth data, wherein the fifth data represent the signal with a modified peak;
- wherein at least one of the peak detector or the signal canceller are configured to operate concurrently or simultaneously with the filter;
- wherein the at least one of the peak detector or the signal canceller being configured to operate concurrently or simultaneously with the filter comprises at least one of the peak detector or the signal canceller processing the first data concurrently or simultaneously with a processing of the first data by the filter.
A method of signal processing, comprising:
- receiving first data representing a signal for wireless transmission, modifying the first data in a filter operation, and outputting second data as the modified first data;
- detecting third data representing a peak of the signal, wherein the third data are a subset of the first data;
- generating fourth data representing a cancellation signal corresponding to the peak of the signal;
- and
- generating fifth data using the second data and the fourth data, wherein the fifth data represent the signal with a modified peak;
- wherein at least one of the detecting the third data or the generating the fourth data occurs concurrently or simultaneously with the modifying the first data in the filter operation.
Dependencies are inferred from the claim text.