Multiuser Detection Using NOMA Technique for FDMC-CDMA System in Fading Channels: An Overview

Multiuser Detection Using NOMA Technique for FDMC-CDMA System in Fading Channels: An Overview

Non-Orthogonal Multiple Access (NOMA) is an emerging technique which will perform well in 5G wireless communication system. Multiple users can share the resources which are available in spectrum and also individual user can be identified easily with the help of Successive Interference Cancelation (SIC) algorithm. In this paper, the power domain is considered for detection of power allocation for the base stations. The errors in fading channel is demonstrated with the help of multi carrier code division multiple access (MC-CDMA), in which the frequency diversity can be resolved hastily. Due to high range of multiple access interferences the performance of MC-CDMA has been restricted. A new technique is proposed in this paper, based on Frequency Division – Multi Carrier Code Division Multiple Access (FD-MC-CDMA) system and the Multiple Access Interference (MAI) can be greatly reduced by exploiting the available range of frequencies.  NOMA principle is used to enhance the signal strength of proposed system and highly restricted for appearance of MAI at the receiver end. In this paper, the NOMA based FD-MC-CDMA system; the range of signal strength can increase for different users in fading channels and reduce the interferences between the users. The performance of the proposed system can be estimated in terms of Bit error rate (BER) and SNR and   it compares with other existing techniques. The simulation results are carried out using Matlab software.

Author(s) Details

Dr. Guntu Nooka Raju
GMR Institute of Technology, Rajam, Srikakulam, A.P., India.

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