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Multi-channel digital down conversion system with data backtracking function and down conversion method

A technology of digital down-conversion and digital down-conversion, which is applied in the field of multi-channel digital down-conversion systems, can solve problems such as complex delay control methods, inconvenient application of digital down-conversion systems, and lack of data storage and data backtracking functions, etc., to achieve The effect of increasing application flexibility

Active Publication Date: 2019-04-23
余芳
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Problems solved by technology

[0003]However, the current digital down conversion system does not have the function of data storage and data backtracking, and there is still a relatively complicated delay control method. The application of the digital down conversion system brought a lot of inconvenience

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  • Multi-channel digital down conversion system with data backtracking function and down conversion method
  • Multi-channel digital down conversion system with data backtracking function and down conversion method
  • Multi-channel digital down conversion system with data backtracking function and down conversion method

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Embodiment Construction

[0035] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0036] Such as figure 1 As shown, a multi-channel digital down-conversion system with data backtracking function, including signal quadrature module, sub-band conversion module, serial-to-parallel conversion module, switching array module, storage array module and low-speed multi-channel digital down-converter;

[0037] The signal orthogonal module is used to convert the input signal into two orthogonal signals, and the output terminal of the signal orthogonal module is connected to the sub-band conversion module; the sub-band conversion module is used to convert the two orthogonal signals The bandwidth is converted into a plurality of subbands with the same bandwidth to reduce the sampling rate, and the output end of the subband conversion...

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Abstract

The invention discloses a multi-channel digital down conversion system with a data backtracking function and a down conversion method. The system comprises a signal orthogonal module, a subband conversion module, a serial to parallel conversion module, a switch array module, a storage array module, and low-speed multi-channel digital down converter, wherein the signal orthogonal module is used forconverting an input signal into two orthogonal signals, an output end of the signal orthogonal module is connected with the subband conversion module, the subband conversion module is used for converting bandwidths of two orthogonal signals into multiple subbands with identical bandwidth, so as to lower sampling rate, and an output end of the subband conversion module is connected with the switcharray module through the serial to parallel conversion module. The system can realize data backtracking, and controls each down conversion channel of the multi-channel digital down converter accurately and independently in backtracking.

Description

technical field [0001] The invention relates to digital down-conversion processing, in particular to a multi-channel digital down-conversion system and method with data backtracking function. Background technique [0002] Due to the incomparable superiority of traditional radio technology, software radio has become the industry-recognized development direction of modern radio communication technology. The ideal software radio system emphasizes the openness and programmability of the architecture, the flexibility of the hardware circuit, and puts the digital processing (ADC and DAC) as close as possible to the antenna, and changes the configuration, structure and function of the hardware through software updates. After the analog intermediate frequency signal is sampled by an analog-to-digital converter (ADC), the obtained digital intermediate frequency signal must be moved to the baseband. This moving process is the so-called digital down-conversion technology. [0003] How...

Claims

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Application Information

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IPC IPC(8): H03D7/16
CPCH03D7/16
Inventor 余芳
Owner 余芳
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