Intermediate-frequency filtering device and method

Abstract

An apparatus for Intermediate Frequency (IF) filtering includes an IF filter. Said apparatus also includes a filtering coefficient storage and a coefficient selecting and controlling unit connected with the filtering coefficient storage, and the output end of said coefficient selecting and controlling unit is connected with the IF filter; wherein said filtering coefficient storage is set to store the filtering coefficients of the IF filter in different communication standards. Said coefficient selecting and controlling unit is set to extract the filtering coefficient corresponding to the cummunication standard in which the IF filter operates, from said filtering coefficient storage, and provide the filtering coefficient to said IF filter. Said IF filter is set to perform data filtering processing with the obtained filtering coefficient from the coefficient selecting and controlling unit. The present invention can also provide an IF filtering method. The present invention can save the hardware resources required for digital IF information processing in the scene which supports the multi-mode, the mixed-mode, and the multi-antenna and multi-carrier.

Description

technical field [0001] The invention relates to the fields of wireless communication, digital signal processing and integrated circuit design, in particular to an intermediate frequency filter device and a filter method. Background technique [0002] Software radio technology (Software Radio, referred to as SDR) has become a research hotspot in wireless communication in recent years. Major equipment manufacturers are competing to launch SDR-based systems. The traditional network and base station systems are in a transitional period: 1 1. The application of the separated base station architecture makes the base band processing unit (Base Band Unit, BBU for short)-Remote Radio Unit (RRU for short) base station architecture gradually become the mainstream. 2. Miniaturization of base stations has become a development trend. 3. The energy consumption and efficiency requirements of the base station are getting higher and higher, and it has become a key technical indicator for mea...

AI Technical Summary

Problems solved by technology

[0007] The above simple replication method is easy to implement and easy to expand computing power, but it brings a great waste of hardware resources and chip area, resulting in the expansion of base station volume, increase of power consumption, and waste of production cost

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