Radio Channel Interference Immunity Using Minimum Shift Keying Signal in the System of Time-spatial Processing of Signals

Abstract

The work is devoted to digital communication systems. The communication channel that is part of system time-spatial processing of radio signal is considered. The radio channel uses a minimum shift keying (MSK) signal. The popularity of MSK signals is due to the fact that they have not only a continuous phase, but also a modulation index of 0.5, which allows them to be used in radio data channels with bandpass filters whose bandwidth can be close to the clock frequency of a digital signal. In the work, the radio channel interference immunity using the MSK signal was determined in the system of time-spatial processing of radio signals. The case when a radio interference acts on the communication channel in the form: BPSK, QPSK, MSK and harmonic interference is considered. The simulation in the Matlab software package has shown that interfering radio signals more likely increase the probability of bit error than noise. Show that increase in the efficiency of using the resource of time-spatial processing of radio signals will be facilitated by the creation of a frequency-time matrix based on the results of monitoring the surrounding electromagnetic environment