Performance Analysis of the Physical Layer of Long-Term Evolution (LTE)

Abstract

This research starts with a brief introduction to generations of mobile communications along with their standards, the modulation technique multiple access schemes, and the basics of wireless communication, including noise and fading. It contains an introduction to LTE physical layer for both downlink and uplink transmission. It also describes in detail the two multiple access schemes (OFDMA & SC-FDMA) used in LTE on the physical layer. After that, it illustrates the design analysis of both multiple access techniques i.e., SCFDMA and OFDMA with block diagrams. It also contains the description of performance parameters used for performance evolution i.e., equations, and formulas of PAPR, SNR, and probability of error. In the end, it contains a result analysis of the graphs based on MATLAB simulation of the above-described parameters. These graphs are taken for different modulation schemes i.e., BPSK, QPSK, 16-QAM, and 64-QAM. Finally, it shows the set of conclusions of our research work based on the result analysis.