Multi-stage crest factor reduction (CFR) for multi-channel multi-standard radio

摘要

Multi-stage crest factor reduction (CFR) techniques are provided for multi-channel multi-standard radio (MSR). A multi-stage crest factor reduction method comprises applying one or more data samples associated with at least one channel of a first technology type to a first individual crest factor reduction block; applying one or more data samples associated with at least one channel of a second technology type to a second individual crest factor reduction block; aggregating outputs of the first and second individual crest factor reduction blocks to generate an aggregated output; and applying the aggregated output to a composite crest factor reduction block. The individual crest factor reduction blocks can be implemented using a sampling rate appropriate for the corresponding technology type. The composite crest factor reduction block operates at a higher sampling rate than the individual crest factor reduction blocks.

主权项

1. A multi-stage crest factor reduction method, comprising:
applying one or more data samples associated with at least one channel of a first technology type to a first individual crest factor reduction (CFR) block in a first CFR stage, the one or more data samples associated with different channels of the at least one channel of the first technology type aggregated prior to being applied to the first individual CFR block; applying one or more data samples associated with at least one channel of a second technology type to a second individual CFR block in said first CFR stage, wherein the first technology type is different from the second technology type, the one or more data samples associated with different channels of the at least one channel of the second technology type aggregated prior to being applied to the second individual CFR block; applying one or more data samples associated with one of a channel of the first technology type or a channel of the second technology type directly to a third individual CFR block in said first CFR stage, wherein data samples associated with channels of the first technology type and data samples associated with channels of the second technology type are from signals communicated in accordance with different technology protocols; aggregating outputs of said first, second and third individual CFR blocks to generate an aggregated output of said first CFR stage; and applying said aggregated output of said first CFR stage to a composite crest factor reduction block in a second CFR stage.