Software radio multi-channel processing method for realizing broadband signal analysis
A software radio and broadband signal technology, applied in baseband system components, electrical components, transmission channel monitoring and other directions, can solve problems such as not fast enough speed, lost signals, omissions, etc., to achieve high bandwidth utilization, small calculation, visual field open effect
Inactive Publication Date: 2011-07-06
LANZHOU ZHONGSHITONG ELECTRONICS TECH
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[0004] This DDC system can flexibly change the center frequency and adjust the bandwidth appropriately, but it can only process one channel at a time. It cannot completely cover signals in a wide frequency range, especially hopping and spread spectrum signals. It is used for searching and monitoring. If it is not fast enough, the signal will be missed or lost, resulting in a missed alarm, and it is impossible to intercept high-speed and broadband signals with full probability
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[0021] The present invention will be described in detail below in conjunction with specific embodiments, where the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.
[0022] This embodiment discloses a software radio multi-channel processing system for broadband signal analysis, such as figure 1 As shown, it includes a high-speed analog-to-digital converter (high-speed ADC), a wide-band digital frequency converter (WWDC), and a complex signal polyphase digital filter bank connected in series; the high-speed analog-to-digital converter samples broadband signals; the broadband The digital frequency converter adjusts the voltage-controlled oscillator frequency and the extraction multiple of the broadband digital frequency converter to change the signal receiving center frequency and bandwidth; the complex signal polyphase digital filter bank adjusts the complex signal poly...
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The invention relates to a software radio processing system, in particular discloses a software radio multi-channel processing system for broadband signal analysis. The software radio multi-channel processing system for the broadband signal analysis comprises a high-speed analog-to-digital converter, a broadband digital frequency converter and a complex signal multiphase digital filter group sequentially connected in series. A software radio processing method comprises the following steps of: firstly, adjusting the center frequency of a front end frequency and bandwidth through a broadband digital down converter; and then completing parallel processing on a plurality of channels through the multiphase digital filter group so as to monitor and analyze a broadband signal in detail. Therefore, the burden of a front end processor is greatly reduced, the center frequency can be flexibly changed and the bandwidth can be properly adjusted through broadband digital down converter at the front end, and the parallel processing on data can be completed at the same time.
Description
technical field [0001] The invention relates to a software radio processing system, in particular to a software radio multi-channel processing system for broadband signal analysis. Background technique [0002] In radio monitoring, it is necessary to realize the monitoring and analysis of high-speed and broadband signals, such as hopping and spread spectrum signals. Due to the adoption of broadband real-time frequency hopping technology, these line numbers have good anti-interference and anti-interception capabilities. Therefore, the tracking and interception of broadband and high-speed signals has always been a hot topic of research. [0003] The software radio theory has greatly improved the ability to discover these signals. Software radio digital receiving equipment generally adopts a receiving system based on digital down conversion, which is commonly referred to as digital down converter (Digital Down Converter or DDC). The problem of excessive data volume caused by ...
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IPC IPC(8): H04B17/00H04L25/03H04B17/30
Inventor 严天峰
Owner LANZHOU ZHONGSHITONG ELECTRONICS TECH