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PROCESSOR HAVING INSTRUCTION SET WITH USER-DEFINED NON-LINEAR FUNCTIONS FOR DIGITAL PRE-DISTORTION (DPD) AND OTHER NON-LINEAR APPLICATIONS
PROCESSOR HAVING INSTRUCTION SET WITH USER-DEFINED NON-LINEAR FUNCTIONS FOR DIGITAL PRE-DISTORTION (DPD) AND OTHER NON-LINEAR APPLICATIONS
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机译:具有用户定义的非线性函数的指令集的处理器,用于数字预失真(DPD)和其他非线性应用
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摘要
Crest factor reduction (CFR) techniques are provided using asymmetrical pulses. A crest factor reduction method comprises obtaining one or more data samples; detecting at least one peak in the one or more data samples; performing peak cancellation on the at least one detected peak by applying an asymmetric cancellation pulse to the at least one detected peak; and providing processed versions of the one or more data samples. The asymmetric cancellation pulse is generated, for example, by a minimum phase filter and has a substantially minimum group delay. New peaks associated with peak re-growth are introduced substantially only to the one side of the asymmetric cancellation pulse. The process can optionally rewind by an amount greater than or substantially equal to a group delay of the asymmetric cancellation pulse to address the limited number of pre-cursors that may be present in the asymmetric cancellation pulse.
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