Rate conversion device and method thereof, base station equipment

Abstract

The embodiment of the invention discloses a rate conversion device and a method thereof, and base station equipment. The device comprises a pre-processing module, a storing module and an output processing module, wherein the preprocessing module is used for preprocessing input data according to an interpolation rate to obtain each interpolation base point of the input data, corresponding input sampling point data of each interpolation base point, and a corresponding interpolation coefficient of each interpolation base point; the interpolation rate is a ratio of the rate of the input data to the rate of output data; the storing module is used for storing the corresponding input sampling point data of each interpolation base point and the corresponding interpolation coefficient of each interpolation base point; and the output processing module is used for multiplying the corresponding input sampling point data of each interpolation base point with the corresponding interpolation coefficient of each interpolation base point, and performing rounding and saturating processing to obtain the output data. Due to the adoption of the rate conversion device, the problems of the need of redesigning a filter along with the change of an application scene, higher design cost and greater logical processing delay existing in the conventional rate conversion device of a polynomial function-based filter are solved.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a rate conversion device and method thereof, and base station equipment. Background technique [0002] In wireless communication systems, the bandwidths of various mobile systems are different, and the rates of their baseband signals are also different. Traditional old base stations can only support one type of baseband service. In order to maximize investment benefits, operators hope that the same base station can support multiple services, so multi-mode base stations that can support multiple services at the same time appear. The rate conversion technology can complete the conversion of the multi-mode baseband signal rate, and adapt the different rates on the baseband side to the same analog-to-digital converter (AnalogtoDigitalConverter, referred to as ADC) and digital-to-analog converter (DigitaltoAnalogConverter, referred to as DAC) rate o...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a rate conversion device, its method, and base station equipment, which are used to solve the problem that existing filter rate conversion circuits based on polynomial functions must redesign the filter as the application scenario changes, and the design cost is relatively high. Problems with high and large logic processing delays

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