Multimode support parallel multichannel fast frequency sweeping method and multimode support parallel multichannel fast frequency sweeping system

Abstract

The invention relates to a multimode support parallel multichannel fast frequency sweeping method and a multimode support parallel multichannel fast frequency sweeping system. The system consists of four parts including a broadband radio frequency part, a multimode medium frequency part, a baseband frequency sweep algorithm part and a software configuration module, wherein the broadband radio frequency part is mainly used for carrying out analog amplification, filtering, frequency mixing, analog-to-digital (A / D) conversion and the like on the received radio-frequency signals; the multimode medium frequency party is mainly used for carrying out down-conversion treatment on digital intermediate frequency signals, wherein digital frequency mixing is carried out on the signals before down-conversion; the baseband frequency sweep algorithm part mainly comprises a frequency point detection module and a power calculation module; the frequency point detection module is used for rapidly and accurately judging frequency points, and the power calculation module is used for determining a main base station frequency point and a neighbor cell site frequency point; the software configuration module is used for carrying out online configuration on radio frequency and intermediate frequency by an upper computer, so that broadband radio frequency and multimode medium frequency are realized, and multiple communication systems are compatible. The multimode support parallel multichannel fast frequency sweeping system is capable of realizing rapid frequency sweeping of multiple communication modes such as global system for mobile communication (GSM), code division multiple access (CDMA), wideband code division multiple access (WCDMA), line termination equipment (LTE) and the like; the system is high in flexibility, rapid in speed, wide in application scope and cost-saving.

Description

Technical field [0001] The present invention relates to the field of communication technology, in particular to a parallel multi-channel fast frequency sweep method and system supporting multi-mode. Background technique [0002] With the development of mobile communication and radio technology, multiple communication system modes have been widely used, and mobile communication terminals now support multi-mode communication systems. At the same time, the Radio Management Committee needs a device and system that can achieve rapid frequency sweeping of wireless communications. With the use of mobile phones to conduct illegal crimes and obtain illegal information activities is becoming more and more rampant. For some special departments or occasions, such as national security, criminal investigations, military special operations, advanced confidential business meetings, examination room monitoring, etc., a These technologies and methods realize the control, interception, and locatio...

AI Technical Summary

Problems solved by technology

[0005] 1) Poor real-time performance, low efficiency of single-channel serial processing mechanism, and long sweep time

[0006] 2) The system compatibility is poor, and the hardware platform and software system cannot be compatible with multiple communication modes

[0007] 3) Multi-channel processing requires multiple chips, which consumes a lot of hardware resources and is expensive

[0008] 4) The reliability of the frequency point detection algorithm is poor, resulting in misjudgment of the frequency point

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