DESIGN AND SIMULATION OF ASK 31 CHANNEL FREQUENCY HOPPING SPREAD SPECTRUM (FH/SS) TRANSCIEVER SYSTEM USING CONTIGUOUS BAND PASS FILTER BANKS

Abstract

This paper propose a design and simulation of Amplitude Shift Keying (ASK ) 31 channel frequency hopping spread spectrum (FH/SS) transceiver system. The proposed design is implemented using Matlab/Simulink package. There are many available synchronization techniques that can be used in frequency hopping spread spectrum (FH/SS) transceiver system most of these techniques require complex search operation and hence need complex hardware. In this paper a contiguous parallel digital band pass filter (BPF) banks for 31 channel FH/SS transceiver system has been designed and implemented successfully in real time using Matlab /Simulink. This designed bank of digital filters is used as a new, simple and efficient approach for synchronization of the system. This proposed system can be used to transmit and receive digital information with a data rate of 160 k bit /sec for frequency hopping rate of 160 k hop/sec and spread the transmitted data in the high frequency (HF) band, 18.6 MHz (3-21.6 MHz). Two models of jamming: multi-tone jamming (MTJ) and hopper jamming (HJ) were designed and simulated with and without the presence of Additive White Gaussian Noise (AWGN) to test the proposed design system . The obtained results proved that the proposed system passed these tests successfully.