Multi-channel signal analog demodulation system and method

Abstract

The present invention relates to a multi-channel signal analog demodulation system and its method, characterized in that it includes a polyphase filter module, the input end of the polyphase filter module is used to obtain AD signals, and divides the AD signals into a channel After the IQ data are respectively sent to the output terminal groups of the polyphase filter module, the output terminal groups of the polyphase filter module are connected to the input terminal groups of the parallel-to-serial input module in one-to-one correspondence, and the parallel-to-serial input module uses Arbitrating and sorting the IQ data of channel a, the output end of the parallel-to-serial input module is connected to the demodulation module, and the output end of the demodulation module is connected to the serial-to-parallel output module; the polyphase filter module, the parallel-to-serial The input module, the demodulation module and the serial-to-parallel output module are all integrated on the FPGA chip. The invention improves the real-time waiting ability of multi-channel signals, solves the problem that instantaneous signals are difficult to monitor, improves the utilization rate of FPGA chips, saves resources, and simultaneously improves the efficiency of signal demodulation.

Description

technical field [0001] The invention relates to the technical field of wireless signal demodulation, in particular to a multi-channel signal analog demodulation system and method thereof. Background technique [0002] In recent years, with the rapid development of wireless technology, various complex modulation techniques such as high-speed frequency hopping, spread spectrum, and time-division multiplexing have become more and more widely used. In the field of wireless signal monitoring, it is necessary to monitor multiple signals in different frequency bands in real time, to capture various signals, and to wait and detect signal actions in frequency bands in real time. Under conventional technology, only signals in a specified frequency band can be monitored at the same time. Others Signals in the frequency band are easy to miss, especially the monitoring of short-term signals is more difficult. [0003] Traditional signal monitoring devices can only process signals of one...

AI Technical Summary

Problems solved by technology

[0005] In view of the defect that the above-mentioned detection equipment has poor processing ability to multi-channel signals, the present invention provides a multi-channel signal analog demodulation system and its method. The demodulation processing of the incoming demodulation module not only improves the processing capability of multi-channel signals, but also improves the utilization rate of the FPGA chip and saves resources

Images