Improved Performance Evaluation of Frequency Hopped spread spectrum using QAM/FSK Modulation Techniques

Abstract

theoretical foundation has been provided that expands upon QAM and FSK modulation in the application of Frequency Hopped spread spectrum systems. This paper mainly focuses on the Bit Error Estimation in Frequency Hop Spread Spectrum System using Quadrature Amplitude modulation and Frequency shift keying which are used in defense applications. The main aim here is to calculate the bit error performance of a frequency hopping spread spectrum model in the presence of AWGN channel. This paper provides a systematic approach for evaluating the performance of FHSS operating with coherent M-ary FSK demodulation. There have been investigations into the frequency hop spread spectrum systems employing different modulation schemes to decrease the bit error ratios. There has been much work done on computing BER of FHSS systems with error control coding using industry standard convolutional coding. KeywordsHopped spread spectrum,FSK,QAM.