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Intermediate-frequency filtering device and method

A filter device and intermediate frequency filter technology, which is applied to electrical components, transmission systems, and communication between multiple stations, can solve the problems of base station volume expansion, hardware resources, chip area waste, and production cost waste. The effect of saving hardware resources

Active Publication Date: 2011-06-22
SANECHIPS TECH CO LTD
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  • Abstract
  • Description
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  • Application Information

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

Method used

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  • Intermediate-frequency filtering device and method
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  • Intermediate-frequency filtering device and method

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Embodiment Construction

[0032] Such as image 3 As shown, the intermediate frequency filter device includes an intermediate frequency filter, and also includes a connected filter coefficient memory and a coefficient selection and control unit; the output terminal of the coefficient selection and control unit is connected to the intermediate frequency filter. This IF filter is one or a combination of any two or three of the following: shaping filter, interpolation filter, decimation filter;

[0033] The filter coefficient memory is used to store the filter coefficients of the IF filter under different communication systems. The filter coefficient memory can be a single memory device, or a combination of multiple sub-memory devices. For example, when the IF filter is a shaping filter, there may be multiple sub-memory devices, and each sub-memory device stores a filter coefficient of a shaping filter of a communication standard. When the intermediate frequency filter is a shaping filter and an interpo...

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Abstract

The invention discloses an intermediate-frequency filtering device and method. The intermediate-frequency filtering device comprises an intermediate-frequency filter and is characterized by comprising a filtering coefficient storage and a coefficient selection and control unit which are connected; the output end of the coefficient selection and control unit is connected with the intermediate-frequency filter; the filtering coefficient storage is used for storing filtering coefficients of the intermediate-frequency filter under the different communication modes; the coefficient selection and control unit is used for extracting the filtering coefficients corresponding to the communication mode under which the intermediate-frequency filter works from the filtering coefficient storage and providing the filtering coefficients for the intermediate-frequency filter; and the intermediate-frequency filter is used for using the filtering coefficients acquired from the coefficient selection and control unit to carry out data filtering processing. The intermediate-frequency filtering device and method provided by the invention are used to save hardware resources required by processing digital intermediate-frequency information in scenes in which multimode, mixed-mode, multi-antenna and multi-carrier modes are supported.

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...

Claims

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Application Information

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IPC IPC(8): H04B1/40H04B7/26
CPCH04B1/001
Inventor 赵兴山
Owner SANECHIPS TECH CO LTD
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