Optimal Physical Layer NB-IoT Design Enhancement for Cellular LTE WAN Network in Smart Healthcare

Recent times NB-IOT is widely emerged to serve high-capacityCellular LTE networks especially in smart health monitoring. The major challenge is the restricted bandwidth constrain offered by NBIoT networks.The Physical layer is responsible for data communication over the network. Orthogonal-Frequency Division Multiplexing (OFDM) is used as thecommunication standard at NBIOT physical layer. The prime goal of this paper is to enhance the performance based on the parametric evaluation of LTE-OFDM system for NB-IoT-WAN. The proposed design enhances the performance by setting optimal cyclic prefix (CP)samples and selection of FFT size.It is proposed to use M-QAM for better capacity of data transmission. But it is highly required to evaluate the bit error rate (BER) performance under the higher order modulations to offer distortion less transitions.The optimal phase offsets is taken into account and it is proposed to compare the performance of random and uniform power distributions across the network. Paper compared the uniform and normal power allocation distributions performance. The capacity enhancement is provided by increasing the FFT levels. The BER performance of the M-QAM and M-PSK modulation techniques are compared.Various parameters are optimally selected to enhance system performance including subcarriers, CP samples, and constellation order. The proposed communication design is capable of offering efficient bandwidth utilization. Overall paper considers all aspects to achieve the best system performance and offered BER improvement