Design and Performance Analysis of FH-ST-FSK

Based on military data communication of ordinary frequency-hopping(FH-FSK) at home and abroad~([1]) and Space-Time Frequency-Shift Keying(ST-FSK)~([2]),the paper presented the data communication system of Frequency-Hopping Space-Time Frequency-Shift Keying(FH-ST-FSK).Analysis of its performance comes to a conclusion that the presented system of FH-ST-FSK has a better prospect of application.The advantages lie in three aspects: ① the presented system of FH-ST-FSK has better performance under fading channels than that of FH-FSK(diversity gain reaches 3～10 dB through space-time coding);② FH-ST-FSK has better performance of counterinterception and counter-capture(for the same performance of bit error ratio,the required power of the FH-ST-FSK transmitter is more than one time lower than that of ordinary FH-FSK,so it decreases the probability of unanticipated interception and capture);③ compared with ordinary ST-FSK,the presented system possesses the capability of frequency-hopping,so resulting from spread spectrum gain it can powerfully antijam,which has comparable performance of FH-FSK.