Review the Performance of Different Digital Modulation Techniques with Suitable Error Control Codes in Telehealth Services

Abstract

Being the primary medium of communication in the present world, the usage and development of wireless digital communication are increasing day by day. Due to low cost, high-speed secure data transmission, and less noise than analog transmission, digital modulation techniques are widely used in many industrial and healthcare sectors. However, for long-distance transmission, selection of inappropriate modulation techniques, by choosing the right coding technique, often leads to more cost, less signal strength, and even more obscurity. Even sometimes for the usage of high-rated modulation techniques for small-distance results significant issues and unnecessary energy wastage in wireless sensor networks. This paper discusses the selection of right and reliable modulation techniques (e.g., BPSK, BASK, BFSK) using the desired coding techniques such as convolution code or Reed-Solomon code based on the significant distance and security by showing the comparison of each aspect of transmission using MATLAB simulation. Now, for transmission of a signal, the major part depends on the inside and outside noise that affects the signal strength. So, this paper also aims to the transmission with right combinations of both coding and modulation techniques as well as transmit them under AWGN channel and Rayleigh channel that can able to make an atmosphere of real-life noise. The all-over idea proposed in this paper includes four ways to clarify the result that covers the comparison of SNR and BER ratio of each modulation techniques, transmission under AWGN and Rayleigh channel, transmission using convolution and RS code for signal strength, and finally putting all together to find the best way of transmission. Synthetic data is used to simulate this experimental work.KeywordsBit error rateSignal to noise ratioAWGN channelRayleigh channelReed-Solomon codingConvolution coding technique