Application of MATLAB Software for Implementing Shift Keying Techniques

Abstract

We live in the digital world. Communication is intricate part of our daily life. Communicating effectively over a large distance has always been the quest of engineers and scientists. Several modulation techniques like the AM and FM, have been tried and tested in the past century to get the desired analog signal at the receiver. But with the introduction of digital systems we find ourselves in the time of ever increasing demand for high data rates and optimum bandwidth usage. This has forced us to look for better modulation techniques with higher immunity to environmental noise and channel distortion. Some of these techniques are ASK, FSK and PSK. This paper discusses the introduction of Matlab software in implementation of these techniques. The results which are found by using this software can easily correlate with the results that are found by doing the experiments with the help of hardware kits used in the communication laboratory. Implementing these techniques using software not only enhances the learning interest of students, but also improves their practical ability.