Short-wave communication channel simulation device and method

Abstract

The invention discloses a short-wave communication channel simulation device and method. The short-wave communication channel simulation device and method mainly solve the problems of the prior art that the signal sampling rate is single, channel performance parameters are difficult to configure, and the prior art is lack of way for judging whether the input signal is effective signal or noise. The short-wave communication channel simulation device comprises a serial data input module, a signal sampling module, a signal processing module and a signal output module. The short-wave communication channel simulation method includes steps that (1) inputting character data; (2) sampling analog signals; (3) acquiring digital multiplexing signals; (4) acquiring frequency offset adding signals; (5) setting route number; (6) acquiring delay time extending signals; (7) acquiring total fading signals; (8) acquiring noise adding signals; (9) outputting analog signals. The short-wave communication channel simulation device and method have advantages of selectable signal sampling rate, convenience in channel parameter configuration and independent input signal judgment, and the short-wave communication channel simulation device and method are suitable for different short-wave communication experiments.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a short-wave communication channel simulation device and method in short-wave communication. The invention can be used in various short-wave communication experiments to realize the simulation of short-wave communication channel characteristics, so that developers can conveniently test the performance of the short-wave communication system in a laboratory environment, reduce the development cost of the short-wave communication system and shorten the development time. cycle. Background technique [0002] Analog shortwave communication channel technology mainly refers to the technology of adding multipath delay, frequency offset, fading and band-limited Gaussian white noise to shortwave signals. The research of HF channel is an important part of HF communication research work, so the research of simulating HF communication channel has not only theoretical significance ...

AI Technical Summary

Problems solved by technology

However, the disadvantages of the method disclosed in this patent application are that different signal sampling rates cannot be selected, there are specific requirements for the bandwidth of the input signal, and it lacks flexibility, and it only simulates the multipath broadening and Doppler broadening of the channel The characteristics of the actual short-wave channel are not completely simulated, but the method of multipath broadening and Doppler broadening is only theoretically improved, and it cannot be directly used in experimental applications.

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