PERFORMANCE ANALYSIS OF MULTI CARRIER MODULATION SCHEMES IN 5G CELLULAR SYSTEMS
Naveena A Priyadharsini 1, S. Tamil Selvi 2
1 Assistant Professor, Department of ECE, ACWE, Kanyakumari, Tamilnadu, India.
2 Professor & Head-PG, Department of ECE, NEC, Kovilpatti, Tamilnadu, India.
In the existing 4G technology, Orthogonal Frequency Division Multiplexing (OFDM) plays a vital role. As the demand for data traffic in cellular networks increase day by day, the capacity of the system should be increased. The resources available today are inefficient to meet the future needs. So the current techniques must be upgraded. In this paper we concentrate on the requirements of Fifth generation (5G) cellular networks and also the design of its physical layer in downlink. For this purpose a multicarrier methodology Generalized Frequency Division Multiplexing (GFDM) is considered. Here the performance of both the OFDM and GFDM system is compared and analyzed using higher order modulation schemes and linear iterative receiver structure. The simulation results clearly explained that the GFDM system has less symbol error rate (SER) than the OFDM system, which increases the transmission rate.
