Multi-channel multi-phase multi-rate adaptive FIR digital filtering processing architecture

Abstract

A multi-channel multi-phase multi-rate adaptive FIR digital filtering processing architecture disclosed by the invention is small in hardware overhead and high in data throughput rate. The architecture is realized through the following technical scheme: a phase splitting unit and a FIR filter coefficient configuration unit utilize a synchronous clock signal to preprocess data; the phase splitting unit processes phase splitting data according to a phase splitting number and an input signal data sampling rate; the FIR filter coefficient configuration unit configures an FIR filter coefficient and outputs the filter coefficient; a parallel FIR filtering unit performs multi-phase parallel filtering processing according to the phase splitting signal and the phase splitting number output by the signal phase splitting unit and the FIR filter coefficient given by the FIR filter coefficient configuration unit; and under the action of a gating unit, a delay summation unit separately performs delay summation processing on the signals output in the filtering processing process by using the current multi-phase filtering parallel technology of the parallel FIR filtering unit, and outputs a multi-phase multi-rate adaptive filtering result.

Description

technical field [0001] The invention belongs to the field of digital signal processing of communication systems, and in particular relates to a multi-channel and multi-phase digital filter processing architecture that can flexibly adapt to various sampling rates. Background technique [0002] At present, many complex digital systems have more than one sampling rate data processing requirements, and multi-rate digital signal processing (multi-rate digital signal processing) technology can process different sampling rate signals in the same system, its core is to realize Digital signals are converted between different sample rates. With the continuous development of microelectronics technology and digital signal processing technology, finite impulse response FIR filters based on very large scale digital integrated circuits, SoC chips and high-speed ADCs are widely used in digital signal processing. The main function is to filter uninteresting signals. In addition, useful sign...

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Problems solved by technology

The disadvantages of this implementation are: a large amount of calculation, a large amount of storage, a large delay, and the number of channels can only be a power of 2

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