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All-digital single-channel broadband signal generation method and device

A broadband signal and generation method technology, applied in the direction of synchronous devices, digital transmission systems, electrical components, etc., can solve the problems of low sampling rate, complex structure, digital signal processing speed bottleneck, etc., to reduce volume and equipment complexity, solve The effect of precise alignment

Inactive Publication Date: 2012-01-04
INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

[0005] The present invention aims at the problems of low sampling rate, digital signal processing speed bottleneck, complex analog channelization and other problems existing in the existing broadband signal generation method, which lead to complex structure and complex control of the broadband signal generation system

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  • All-digital single-channel broadband signal generation method and device
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  • All-digital single-channel broadband signal generation method and device

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Embodiment Construction

[0037] A method for generating an all-digital single-channel broadband signal, comprising the following steps:

[0038] a. Broadband waveform generation;

[0039] Using FPGA to realize broadband digital signal generation, parallel-serial decomposition and storage, can realize the synthesis of various broadband arbitrary digital waveforms.

[0040] b. Perform serial-to-parallel conversion processing on the broadband waveform; the signal after serial-to-parallel conversion processing is 64-channel 125Mbps parallel data.

[0041] c. The parallel data processed by the serial-to-parallel conversion is first-stage multiplexed through the multiplexer, and the digital signal is multiplexed into a higher-speed digital signal; the first-stage multiplexer is multiplexed at a ratio of 4:1. The 125Mbps parallel data of 64 channels is multiplexed into 16 channels of 500Mbps higher-speed digital signals through the multiplexer.

[0042] d. Perform second-level high-speed multiplexing on th...

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Abstract

The invention is applied in the technical field of radio electronics and telecommunication, and particularly discloses an all-digital single-channel broadband signal generation method and an all-digital single-channel broadband signal generation device. The all-digital single-channel broadband signal generation method comprises the following steps of: a, generating broadband waveforms; b, performing deserialization processing on the broadband waveforms; c, performing first-level multiplexing on deserialized parallel data by using a multiplexer; d, performing high speed second-level multiplexing on a relatively higher speed digital signal obtained by the first-level multiplexing; e, performing third-level ultra high speed digital signal multiplexing on the second-level-multiplexed high speed digital signal; and f, performing digital-to-analogue conversion on an ultra high speed digital signal to obtain a broadband signal, wherein each multiplexing step is controlled synchronously. By the method and the device, the signal generation and digital-to-analogue conversion of a high speed digital-to-analogue converter (DAC) are realized, a high sampling rate is realized by multi-level multiplexing, accurate multi-channel multi-level synchronization is realized by accurate synchronous control, an actual circuit is developed, and a single-channel broadband signal source can be generated.

Description

technical field [0001] The present invention is applied in the field of radio electronics and telecommunication technology, specifically a method and device for generating an all-digital single-channel broadband signal, which is suitable for generating broadband signals in a single channel and can be widely used in radar, measurement and control, and satellite communication systems, etc. Background technique [0002] All-digital single-channel generation of broadband signal sources requires the system to have a very high sampling rate, and digital generation methods are used for signal generation. Broadband signal generation is widely used in electronic information fields such as radar, communication, and measurement and control. Currently used signal sources need to combine multiple channels to generate broadband signals, and the combination method is analog channelization. The principle of analog channel synthesis is: divide the instantaneous bandwidth into multiple anal...

Claims

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Application Information

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IPC IPC(8): H04L5/00H04L7/033
Inventor 严俊胡茂海叶江峰张伟权有波文豪
Owner INST OF ELECTRONICS ENG CHINA ACAD OF ENG PHYSICS
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