Performance of ST-FSK Noncoherent ML Detector in Presence of Carrier Frequency Offset

Space-Time Frequency-Shift Keying(ST-FSK),which enjoyed high military value,could merge very naturally with frequency-hopping communication systems.Based on the introduction of ST-FSK systems,the paper further presented the block diagrams of the ST-FSK transmitter and receiver,and derived the minimum frequency space for ST-FSK,and for different SNR it discussed the performance of ST-FSK noncoherent ML detector in the presence of distinct carrier frequency offset.Both theoretical analysis and simulation results show that lower SNR lessens the carrier frequency offset sensitivity of ST-FSK detector,and that in the presence of identical frequency offset the performance makes a difference between different levels ST-FSK.