Configurable digital filter device

Abstract

The invention provides a configurable digital filter device, and includes an instruction controller, a filter coefficient multiplexing module, a sampling data input module, a data engine module and an arithmetic module. The instruction controller is connected with the data engine module and the arithmetic module, the data engine module is connected to the arithmetic module and used for providing a filter coefficient and sampling data to the arithmetic module, the filter coefficient multiplexing module is connected with the data engine module, and a sampling data input module is connected with the data engine module. The device can share the data engine module and the arithmetic module, can perform instruction control on the data engine module and the arithmetic module, and enables the arithmetic module to complete multiplication and addition operation in a unified manner, different types of filters can be realized, a universal function is realized, multiplexing between different modes can be satisfied, a circuit delay can be shortened, and operation efficiency is improved.

Description

technical field [0001] The invention relates to a mobile terminal digital filter device, in particular to a configurable digital filter device. Background technique [0002] At present, in the technology of mobile communication, the digital filter is a relatively important component, which has the advantages of high precision, high reliability, programmable change of characteristics or multiplexing, and easy integration. Digital filters have been widely used in speech signal processing, image signal processing, medical biological signal processing, and other application fields (such as communications, radar, sonar, instrumentation, and seismic exploration, etc.), and digital filtering technology has also been It has become a relatively important technology. Whether it is signal acquisition, transmission, or signal processing and exchange, it is inseparable from digital filtering technology. It is crucial to safe, reliable, effective and flexible signal transmission. In the p...

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Problems solved by technology

[0003] The digital filter mainly involves the delay operation of the sampled data, the multiplication operation of the sampled data and the filter coefficient, and the addition operation of all products, etc. In the circuit implementation, the addition and multiplication are relatively resource-intensive, and the addition and multiplication functions The delay of the unit is also relatively long. In the multi-mode mobile phone terminal, it is difficult to share resources for these filters because of the difference in the filter algorithm of different modes. Since the addition and multiplication operations in the filtering process consume resources, the multi-mode mobile The data filtering function in the terminal will occupy more computing resources in the mobile terminal. In addition, the circuit delay of the adder and multiplier itself is relatively long, so the direct multiplexing efficiency of different filters in the same mode is relatively low

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